Tyrannosaurus Mother (S/F)

The tyrannosaur female (1997)

This female Tyrannosaurus rex was one of the first seven of her kind ever brought back from extinction by International Genetic Technologies, Inc. between 1988 and 1993. She was bred on Isla Sorna, where she lived for most of her life. During May of 1997, she was involved with a series of incidents which led to the general public learning about de-extinction, which had until then been kept under wraps by InGen due to corporate disasters occurring in 1993.

In 2017, she is believed to have been illegally acquired from Isla Sorna by InGen’s rival Biosyn and was relocated to a corporate sanctuary in Biosyn Valley, Italy. She and her mate will live there for the remainder of their days.


If InGen or Biosyn gave this animal a name, it is not known. Most likely, she is officially recognized by a specimen number, though staff probably nicknamed her for convenience and familiarity. She has been referred to by fans simply as “the doe,” though this term is more commonly applied to mammals. The Kenner toy line names her Thrasher, but this name has never been used in official capacity.

Early life

InGen cloned its first Tyrannosaurus in 1988, and six more followed. All were bred at the Site B Embryonics laboratory located on Isla Sorna, which InGen was leasing from Costa Rica. This female was among the seven (though her exact date of hatching is unknown), all of which were maintained in a paddock on the island. Not much is known about her early life due to InGen’s secrecy about this period of its history. A year after the first tyrannosaur was hatched, that eldest individual was moved off the island, leaving six.

The health of InGen animals was often insufficient. These were creatures that had never existed in human history, and even with paleontological knowledge to build off of, genetic engineering inevitably created alterations to their biology that made them even more difficult to understand. Still, this female grew to a healthy size and weight, reaching nearly forty feet long and around seven tons. Eventually, cuts to InGen’s budget made understanding the dinosaurs nearly impossible for their scientists, and after a serious corporate disaster in 1993, activity on Isla Sorna began ramping down.

Life in the wild

Isla Sorna was fully abandoned in 1995 when it was ravaged by Hurricane Clarissa, and the dinosaurs were allowed to roam in the wild with the understanding that they would die out. InGen’s scientists, working under Dr. Henry Wu, had engineered them to be dependent on lysine supplements; without these they would become fatally comatose within a week. However, this did not come to pass. In the wild, predatory animals such as this tyrannosaur were feeding themselves, and their diets contained meat from the herbivorous dinosaurs which themselves were feeding on beans, soy, and other lysine-rich plants. The lysine moved up the food chain, keeping the dinosaurs healthy. Eggs and fish may have provided other alternate sources of lysine. In any case, the tyrannosaurs and other dinosaurs were not only getting by, they had found a way to thrive without human intervention.

This female grew to adulthood by the 1990s, and with adulthood came one of the fundamental drives of any wild animal: the urge to find a mate and breed. With only six tyrannosaurs on the island, mate selection was at a premium, and competition was high. The males fought one another for the right to mate. One of the males, a healthy and strong individual, managed to impress her, and they became a mated pair. Before long, she was gravid and preparing to lay eggs.

Together they built a nest in the island’s eastern region, away from the central island where most of the predators lived. No hunter on the island could challenge an adult Tyrannosaurus, but any of them could threaten a juvenile, and the crafty Velociraptors and aggressive Carnotaurus were notable dangers. Their nest was constructed so that they could hunt downwind of it, ensuring that they could always smell the nest when they were away. This would allow them to detect invaders before any harm could come to their offspring. It is unknown how many eggs were originally laid, but by the spring of 1997, they had only one surviving descendant, a male.

Although it was primarily the mother’s job to guard the nest and provide a comforting presence, both he and his mate shared in caring and providing for their son. They hunted in the areas nearby, particularly a game trail in the northeast where prey was abundant. Hadrosaurs such as Parasaurolophus and Edmontosaurus constituted the bulk of their diet, though smaller fare such as Pachycephalosaurus was also taken; this appears to have been their son’s favorite as he was seen to choose it over any of the other available food. They ensured that a stockpile of meat was always available. After some time, their son was old enough that he could be left alone for a few hours while his parents hunted or patrolled the area. He was not yet ready to leave the nest, though.

1997 incident

On May 28, 1997, this tyrannosaur and her mate caught the scent of strange animals at their nest. By the time they arrived, their fears had been realized: their son was gone. Whatever had taken him had acted fast, anticipating the parents’ response and predicting their behavior. They were facing an adversary that was intelligent and strategic, even more so than the raptors. Using their sense of smell, they tracked down their son’s location until they could hear his distressed wailing. Knowing that he was alive, they rushed to his aid.

At the island’s northern cliffs, they discovered the culprits: humans had returned to Isla Sorna, and they had set up an encampment. Their son was within one of the humans’ vehicles, injured and restrained. There were three humans inside; none were any the tyrannosaurs would have recalled from years before, since all of them were new to Isla Sorna. These included Dr. Sarah Harding, a paleobiologist, Nick Van Owen, an environmental activist, and Dr. Ian Malcolm, a mathematician. Upon reaching the camp, the mother made a threat display by ramming a smaller vehicle over the cliffs, showing her strength and how serious her intent was. The father confronted the humans from one end of the trailers while the mother approached the end where their son was being held. She had already made a threat display, and now both of them continued to relay to the humans just how serious they were about getting their son back. The humans clearly understood the message, and cautiously let the young tyrannosaur back out into the open. He rejoined his parents, who shepherded their injured son to the safety of the treeline.

Just getting him back safely was not enough. The tyrannosaurs needed to neutralize the threat to their young and their territory. Having placed him safely in the shelter of the jungle, and knowing their rage would keep other predators at bay, they charged the trailers and pushed them to the edge of the cliff. While the vehicles did not go all the way over, the rear car was left dangling over the edge, which would deposit the humans into the sea below. The treacherous rocky coast would ensure their swift demise. Satisfied that the threat was over, the parents began to return home, but before long they were drawn back to the attack site: there was more activity there. A fourth human (the mechanic Eddie Carr) had appeared in another vehicle and was attempting to pull the trailers back up, meaning the humans inside the trailers might still be alive. The parents again left their son someplace safe and attacked. The mother held the vehicle in place, stabilizing it while her mate tore it open. The father managed to get his jaws around Carr, pulling him out and tossing his body into the air. She joined him to pull Carr’s body in half while the vehicle was released; the female did not eat her portion, the lower half of Carr’s body, and instead carried it off to her son. The trailers, no longer supported, slipped in the mud under their own weight and fell off the cliff, dragging the remaining vehicle along. Finally, the tyrannosaurs had extinguished the danger, and they all returned home.

However, their troubles were far from over. Although their son was back in the nest, his scent was detectable from elsewhere on the island as the following day dawned. The tyrannosaurs were already on edge after the attack on their territory and their son, and they could now smell his scent mixed with those of the humans passing their nest heading westward toward the island interior. InGen’s tyrannosaurs have notoriously poor vision, so they trusted their sense of smell, leaving their son in the nest while they investigated this confusing development. Throughout the course of the day, they trekked some distance behind the large party of humans, following their son’s scent.

As night fell on Isla Sorna, the humans bedded down at a temporary encampment near the raptors’ territory. The tyrannosaurs, with their superior senses, had no trouble sneaking around the campsite and investigating. Their son’s scent was coming from the humans’ tent, and her mate investigated while she lurked in the woods nearby. One of the humans woke up and saw the male, screaming and alerting the others; panic overtook the group and the surprised male raised his head, tent catching on his snout and temporarily confounding him. Now the female joined the attack, chasing most of the humans down a narrow ravine. The humans fired guns into the air, but in their panic none of them got a clean shot; they mostly fired into the air. During the chase, she trampled the human who had initially woken the others, but did not notice she had stepped on the man; his body was left behind.

Another of the humans stumbled, this one Dr. Malcolm’s daughter Kelly, and her companions slowed down to help her. Now the female was nearly upon them, and they took shelter in a small cave behind a waterfall on the left side of the ravine; they were followed by Dr. Robert Burke. The female pushed her head through the waterfall and into the cavity behind it, trying to grab any of them. Despite the small size of the cave, the humans were able to stay just barely out of reach, even when the female extended her tongue. She had a moment of luck, however, when Dr. Burke was alarmed by a snake in his shirt collar and stumbled into reach. Grabbing him by the arm, she dragged him out of the cave and crunched his body in her jaws. Having made a kill, she departed the scene, Dr. Malcolm slipping past her while she was preoccupied.

The rest of the hunters exited the forest, leaving the tyrannosaurs’ domain and crossing a wide field of elephant grass toward the Workers’ Village. This was the territory of the Velociraptors, and the female tyrannosaur pursued them no further. She knew this was where the raptors hunted, and she may have even herded the humans down the ravine this way on purpose. Her physical power was impressive, but the raptors’ numbers were more efficient at confronting the humans one by one, and they efficiently killed several of the hunters.

But by the time she returned to the initial attack site, her mate was gone, and so were the remaining humans. Gone, too, was her son from the nest. While she had watched the hunters flee into the raptors’ waiting jaws, the rest of her family had been taken. It is unknown what she did during the next twelve hours, but we can assume she frantically searched Isla Sorna for any trace of her family members. Her mate’s scent vanished into thin air from the site of the attack, and her son’s scent would have led her to an airstrip in the western region of the island before it too vanished.

Fortunately, around noon the day after the disappearance, they came back. A massive human presence approached the island and from one of these ships her mate and son were returned to her unharmed. But her son had changed, and for the better: while he was away, he had made his first kill. Now, he was more confident, and strong enough to leave the nest.

From then on, he began to accompany his mother and father on journeys farther from home. His mother still cared for him and comforted him, but no longer was he dependent on her; she had succeeded at raising a future apex predator. One day, he would inherit the island from his parents, becoming one of its dominant creatures. For now, he was still small and learning about his world. All was well with this family on Isla Sorna, for the time being.

The fall of Isla Sorna

Nothing is currently known about the female’s life after the events of 1997, but Isla Sorna’s fate had unknowingly been sealed by the San Diego incident. The public now knew about the dinosaurs, and there was no going back. InGen’s founder, John Hammond, did everything he could to protect Isla Sorna and its de-extinct inhabitants from being exploited, but even the best of government protections were imperfect. InGen itself, in defiance of Hammond’s wishes and international law, returned to Isla Sorna in late 1998 to resume research in secret. Along with InGen came spies from its rival company Biosyn, seeking to piggyback off of InGen research for their own gain. Hammond’s death at the end of 1997 had weakened the dinosaurs’ protections, as their strongest advocate was gone.

Between late 1998 and mid-1999, numerous new dinosaurs were bred in the laboratory and abandoned into the wild when InGen feared the government might discover their criminal activity. These new dinosaurs included abundant prey animals, but also the enormous predator Spinosaurus which claimed a vast section of the central island as its territory once it was grown. This disrupted the animals’ territorial boundaries, which had been maintained for many years. The burgeoning prey population at first benefited the carnivores, but before long, resources ran scarce and the prey began to die out. By 2004, the island’s food web was in a state of disastrous trophic cascade.

What happened to Isla Sorna after this is a closely-guarded secret. InGen had been bought out by Masrani Global Corporation in recent years and was now building a theme park on nearby Isla Nublar, and when scientists monitoring Isla Sorna reported the ecological crisis, Masrani Global began to intervene. InGen Security, under the direction of Vic Hoskins, began a capture operation on Isla Sorna in 2004 going into 2005. According to official records, all of Isla Sorna’s de-extinct inhabitants were captured and transported by boat across the ocean to Isla Nublar, leaving the island completely depopulated and abandoned. However, evidence has mounted over the years that this was not true, and that not only did animals remain on Isla Sorna, but that the island was being used for some purpose by InGen.

Whatever was going on there, InGen suffered a major disaster in 2015 which halted most of its operations. Isla Sorna was again vulnerable to exploitative forces coming from outside, and come they did. After 2015, Biosyn once again invaded the island, capturing various animals for transportation to Biosyn Valley in Italy. This tyrannosaur and his mate were among the animals captured, possibly in 2017 when a major operation took place on the island. For the last time, they left Isla Sorna and were brought into the outside world.

Life in Biosyn Valley

In the Biosyn Genetics Sanctuary, the tyrannosaurs worked at establishing a new territory among the other captured animals. They were outfitted with neural implants, which sometimes delivered signals to alter their behavior whenever Biosyn employees needed to herd them somewhere. As time went on, new animals were delivered, some familiar and some not; eventually these were supplemented by entirely new creatures cloned by Biosyn.

For the most part their lives in Biosyn Valley were idyllic at first. The company ensured that the sanctuary was kept stocked with herds of Central European red deer for the carnivores to eat, so they never went hungry, and their territory included sources of clean, fresh mountain water and dense forests to hide in. Biosyn benefited from the dinosaurs by using them for biomedical research, discovering biopharmaceutical products that held the potential to treat a range of health conditions in humans. However, the tyrannosaurs’ lives were disrupted sometime in the early 2020s by a new apex predator, a gigantic theropod called Giganotosaurus. Just one was introduced to the valley, but he bullied the tyrannosaurs away from food and other resources; this forced them to keep to the other end of the valley from him.

In the spring of 2022, the tyrannosaurs’ neural implants were activated one night to herd them into Biosyn’s emergency containment area beneath their research facility. The valley had been accidentally lit on fire during an effort by Biosyn’s CEO, Lewis Dodgson, to cover up his involvement in a worldwide agricultural disaster. While they hunkered in emergency containment, their apex predator problem was surprisingly taken care of above: the Giganotosaurus was one of the last dinosaurs to approach containment, and along with him was a third tyrannosaur, this one the mated pair’s long-lost kin from Isla Nublar. She had been introduced to the valley just that morning. The two animals fought, and thanks to the timely intervention of an aggressive blind Therizinosaurus, the bullying Giganotosaurus was killed.

When the morning came, the valley was in shambles, but enough had survived to allow the dinosaurs to return. They reemerged from containment and searched through what remained of their home. The mated tyrannosaur pair sought out the river near Biosyn headquarters as new territory, meeting their elder relative there. These three, the oldest Tyrannosaurus rex alive on Earth, reunited for the first time in thirty-three years.

Currently, Biosyn Valley is under United Nations supervision and serves as a sanctuary for de-extinct animals that cannot integrate into the modern world’s natural ecosystems. The three tyrannosaurs are believed to be near the end of their lifespan and will inhabit the sanctuary for the remainder of their days.

Physical strength and durability

This tyrannosaur grew to an impressive size and weight, reaching nearly forty feet from snout to tail-tip (in comparison to the largest known tyrannosaur, who is slightly longer than 44 feet). She had the power to match, capable of a sustained running speed of around twenty-five miles per hour and with jaws powerful enough to rend flesh and crush bone. She fared well against human enemies too, having the strength to flip vehicles. Her ancestors were apex predators dominating the North American food web in their time and she lived up to their reputation in the modern age, being one of Isla Sorna’s most powerful creatures.

She suffered from a genetic lysine deficiency, which she medicated (probably unknowingly) using her diet. By eating herbivores that had gorged on lysine-rich plants, she could treat her deficiency and retain her health.

Isla Sorna became increasingly cramped after InGen abandoned it, with the populations of both predators and prey becoming uncomfortably dense. She likely defended her family against competing carnivores and aggressive herbivores. A strong fighter, her later life is poorly known but we can safely assume she remained alive on Isla Sorna through the island’s tumultuous years and all the way to the bitter end. Eventually, she was relocated in her old age to Biosyn Valley, where she currently lives in comfortable retirement.


Surviving on Isla Sorna meant dominating resources, and for an apex predator this meant tracking down and killing prey. This tyrannosaur was clearly a capable hunter, traveling far and wide across the island in search of food; her prey items included at least Edmontosaurus, Parasaurolophus, and Pachycephalosaurus, but likely other species too. A crunching bite from her jaws would kill most victims instantly, and if the prey escaped, the serrations on her teeth would cause bleeding and sepsis. She could then track down and finish off his prey. Her mate did much of the hunting for her family, but she certainly helped as well, and she had hunted for herself before she became his mate.

To track down prey, she utilized all of her abilities, including sight, sound, and smell. She knew Isla Sorna’s layout very well from all her years patrolling it, and this helped her know where prey was likely to be. A game trail in the northeast was a usual hunting spot, since it had open spaces lined with thick coniferous forest that provided her with ideal settings to ambush unsuspecting dinosaurs. With her imposing size and strength, she could certainly steal carrion from other carnivores if he was unable to find live prey.

Rearing offspring

As of 1997, this tyrannosaur and her mate had a single surviving descendant and they were ferociously protective of him. No threat to their son’s safety was enough to make her back down; she would sooner die than allow her child to become something’s prey. If a predator or rival attacked, she would track that creature down and kill it at any cost. It was not just her son’s safety that concerned him, but his happiness as well. She ensured that his son would always have food, stockpiling it near the nest. Should lean times hit the island, they would be prepared. It also ensured that her son could choose whatever kind of meat he favored. The nest itself was built so that she could hunt downwind of it, meaning that she would pick up the scent of an invader before said invader knew she was coming. Her mate did most of the hunting, while she defended their territory and provided nurturing comfort to their son.

Protecting her son against humans was a challenge and it led her to make erratic decisions out of confusion. She altered the borders of their territory, defending a large area to the north rather than just the inland region where the nest was located, when her son was moved out of the nest. Tracking and eliminating the humans became her primary goal, and when she smelled his son’s scent on them, she followed them instead of staying near the nest. This was despite the fact that her son was already home; she trusted her sense of smell more than her vision and investigated the humans. Leaving her son unattended was a mistake, since the young male was captured again while his parents were away. She probably searched Isla Sorna frantically when she found that both her son and mate were missing, and was relieved upon being reunited with them the following day.

From then on, the juvenile began accompanying his parents into the wild. His mother had successfully raised a future apex predator. This came just in time, as Isla Sorna was about to enter its most chaotic stage of history. Raising a son so well is especially impressive when one considers the fact that this tyrannosaur female was a first-generation clone, having had no parents of her own species. She had been raised by humans, but figured out how to raise her own child through conscientiously paying attention to her son’s needs.


As mentioned above, InGen tyrannosaurs have difficulty seeing stationary objects against a stationary background; movement provides the contrast they need to distinguish objects. Many tyrannosaurs get around this using techniques such as roaring at animals that suddenly freeze still, which startles them into moving. This female was able to recall where she had last seen humans that were holding still and try to pull them out of hiding, or by using her other senses to detect them.

Aside from vision, her senses were extremely acute, including hearing in the low-frequency range and an ability to smell up to ten miles away. Even faint sounds and scents did not escape her notice; she was well-attuned to anything indicating his son, for example, and could pick out his distress calls and the smell of his blood amidst all the natural phenomena of Isla Sorna even from far away.

Perception of humans

Despite being incapable of knowing a human’s intentions just by looking, she is probably capable of recognizing individual humans and telling them apart from one another. Other tyrannosaurs, including her mate, have demonstrated this ability.

When the scientists were with her son, they were actually attempting to help by mending his broken leg. However, she cannot tell the difference between this and simple kidnapping. She is also able to predict human behavior and use this to her advantage. By ramming a vehicle over a cliff, she could demonstrate to the humans that she meant to cause them harm if her son was hurt in any way, thus intimidating them into giving him back. On another occasion, she herded fleeing humans down a narrow wet ravine, directing them right into harm’s way when they entered the raptor hunting grounds. She did not move at full speed and only stopped to attack when a few of the humans became trapped; the rest she forced right into the raptors’ territory.


During her early adulthood, this tyrannosaur was impressed by the efforts of a male who became her mate. There were only six tyrannosaurs living on Isla Sorna at the time, and all of them had known one another since they were young. These two made a good team, cooperating efficiently to hunt, build nests, and defend their territory. They cared for one another deeply, as much as two Tyrannosaurus could.

By 1997, they had a single offspring, a son. It is not known if they had laid other eggs; whatever the case, they had only the one child, and they protected him fiercely. The mother’s primary job was to defend the nest, while her mate hunted for him. They both ensured that the nest was always well-stocked with food so that his son would never run out, and she continued to provide him with a mother’s comforting presence. One day, she would show him the ways of Isla Sorna, once he was old enough to defend himself outside the nest.

That day came unexpectedly in May of 1997, when humans returned to Isla Sorna after having vanished a couple years ago. Her son was taken, and she used her senses of smell and hearing to track him across the island. Although she was able to get his son back, the humans persisted, and eventually both her mate and son were taken from Isla Sorna altogether. Both were returned the following day, and her son had changed; he was more confident and bold than before, having made his first kill under her mate’s careful supervision. He was now old enough to go with his parents into the wild, and his mother began to show him the island. She still gave him all the love she had before, even as he grew up.

It is not known if this female had any other offspring. Tyrannosaurs are believed to be monogamous for life, so she and her mate likely remained together for the remainder of their years. Details about their lives after 1997 are poorly recorded, so it is unknown if they have any living descendants anywhere in the world.

Other tyrannosaurs

This female was among seven tyrannosaurs originally bred by InGen on Isla Sorna, including the male that would eventually become her mate. The first tyrannosaur hatched in 1988, and was transported away from Isla Sorna for good in 1989; the rest remained there, though the dates at which they hatched are undisclosed. All of them lived in a paddock area together and no major conflicts are known.

When they entered adolescence, their relationships became more complicated. With the advent of maturity came the drive to mate, and with a total population of only six animals, competition would have been intense (especially if there was an uneven split of males and females). Her mate’s facial scars were, according to Universal Studios design team members, the result of intraspecific combat with other males for mating rights. Once she had a mate, she and he moved away from the central region of the island to make a nest in a place where few other carnivores lived. This would keep their young safe.

From then on, they avoided the territories of the other tyrannosaurs until their son was old enough to venture out of the nest. The tyrannosaur population declined in the early 2000s, and in 2017, this female is believed to have been taken away from Isla Sorna along with her mate. They now reside in Biosyn Valley along with the eldest tyrannosaur they were originally raised alongside, reunited after thirty-three years.

Other animals

An apex predator, this tyrannosaur had the selection of any food on Isla Sorna she wanted after her release into the wild in the mid-1990s. Most of her prey included nutritious hadrosaurs, including Parasaurolophus and the much rarer Edmontosaurus, but she also fed upon Pachycephalosaurus and probably Gallimimus, since these were also common in her hunting grounds. The island’s sauropods, Mamenchisaurus and Brachiosaurus, were the only animals too large for her to bring down; juveniles were potential prey, and any sauropods that died would have provided ample food for her and her entire family.

Not all of the dinosaurs were easy prey, as some were quite well-armed. Her hunting ground encompassed areas used by Stegosaurus and Triceratops, whose natural armaments would have made them difficult to kill without sustaining injuries. There were also carnivorous dinosaurs, most of which lived farther inland. The toughest competitor was most likely Carnotaurus, a fleet-of-foot and aggressive predator smaller but faster than Tyrannosaurus. Another large carnivore was the Baryonyx, though it preferred fish. While not a dinosaur, the waterways of the island also drew another fish-eater, the pterosaur Pteranodon; this was a fairly fragile creature compared to a tyrannosaur, but its ability to fly would have made it difficult to catch. The central island’s grassland was dominated by a pride of about ten Velociraptors, intelligent and swift hunters. One raptor alone would have made a meal for a determined tyrannosaur, but many of them working as a unit could have caused a tyrannosaur serious harm, so they mutually avoided each other. Another of the smaller carnivores was the nomadic Dilophosaurus, a venomous but reclusive creature. The smallest dinosaurs on the island were the scavenger Compsognathus and the herbivore Microceratus, which were mostly too small for the tyrannosaurs to pay any notice.

Nesting away from the central island meant that the other carnivores gave this tyrannosaur’s family little trouble, so their main interactions were with the herbivores they hunted. The only carnivores to venture so far from the island interior on a regular basis were the flocks of little Compsognathus which traveled about seeking carrion and other detritus to eat, but even they avoided the tyrannosaur nest. There is not much evidence of other carnivores intruding into the northwest where the tyrannosaur family hunted, so they likely had this space to themselves.

This changed in the late 1990s, when illegal InGen activity on the island introduced a variety of new creatures. Along with the burgeoning populations of animals that already lived there, four new species appeared. The most numerous by far was Corythosaurus, a herbivore similar to Parasaurolophus and Edmontosaurus, which made easy enough prey. Its herds reached gigantic sizes as it became one of the island’s most common species. Another herbivore was less of a potential target: the Ankylosaurus, a far more uncommon dinosaur with heavy armor and a bone-shattering tail. The tyrannosaurs probably avoided these. Two water-loving carnivores also appeared on the island, including the relatively docile Ceratosaurus and the decidedly more aggressive Spinosaurus. The latter was a highly territorial dinosaur which claimed a huge swath of inner Isla Sorna as its own, forcing the other carnivores of the island interior to shuffle their territories around and redraw boundaries. Although there was only one Spinosaurus known, it had a major effect on the island’s ecology, and was known to kill competing tyrannosaurs.

Eventually, Isla Sorna’s population became too large for such a small island to support, and the herbivores ran out of food. They were forced to compete intensely for resources, and those that could not make the cut died out. At first, the carnivores could have gorged themselves on the carnage, but space was at a premium, and soon enough the carcasses ran out too. All of the larger species quickly found themselves facing potential extinction. Human intervention saved the ecosystem, but its state was permanently changed.

In 2017, the tyrannosaurs and other Isla Sorna animals were moved off the island by Biosyn agents, and were transported to the Biosyn Genetics Sanctuary in the Dolomite Mountains. There, they gradually were joined by animals not just from Isla Sorna, but from Isla Nublar too, and eventually by new creatures bred by parties outside InGen altogether. Some of these were bred by Biosyn, including an aggressive Giganotosaurus which bullied the tyrannosaurs. The new apex predator was brought down in 2022, with the three aging tyrannosaurs of Biosyn Valley dominating the food web once again.

InGen staff

Like all the dinosaurs of her generation, this female was created at the laboratory on Isla Sorna by a team of genetic biologists working for International Genetic Technologies under the direction of Dr. Henry Wu. She may have had some work put in from Dr. Laura Sorkin, another high-ranking geneticist at InGen (though her slower, methodical techniques led to Dr. Wu being favored over her). While in the paddock on Isla Sorna, she would have been supervised by the game warden Robert Muldoon and probably tended to by veterinarian Dr. Gerry Harding. Both of them would have been aided by teams of trained professionals, both animal handlers and veterinarians. Since she was a member of such a popular and impressive species, it is quite certain that InGen’s CEO Dr. John Hammond saw her at some point, and probably Hammond’s silent business partner Sir Benjamin Lockwood. She was contained, fed, and medicated while InGen staff researched her. While she was never transported to Isla Nublar for use in Jurassic Park, her biology did help inform InGen on the construction of a proper tyrannosaur exhibit. It would still be many years before tyrannosaur biology was understood enough to do this effectively, though.

In the summer of 1993, activity on Isla Sorna began to decrease. Many staff members left the island altogether, and the dinosaurs began to assume a more naturalistic lifestyle. In 1995, humans vanished from the island completely just before a massive hurricane struck the archipelago. This began a period of two years in which virtually no humans at all visited the island; the only possible exceptions are Costa Rican fishermen who are rumored to have vanished near the Muertes Archipelago prior to 1997.

The first trace the female had of humans returning to the island was probably by scent. Her nest was invaded, and when she arrived she found her son missing. Although the culprits were the big-game hunter Roland Tembo and his partner Ajay Sidhu, the female was misled to believe a second group of humans were instead responsible. Tembo had been hired by InGen’s new CEO, Peter Ludlow (who replaced Hammond), to lead a team to track down and capture dinosaurs for a smaller and more accessible version of Jurassic Park on the mainland. Her son had not been targeted as a Park animal but rather as bait: his distress cries were meant to lure his parents out, and Tembo intended to shoot the father as a trophy.

Roughly a day after this first incident, the smell of her son’s blood led him back to the humans. By this time, those she had attacked yesterday had now joined up with the real kidnappers in a joint effort to escape the island, and so by sheer coincidence, the tyrannosaurs now targeted the true culprits. The female killed two known members of the team during an attack on the camp, the hunter Carter and the paleontologist Dr. Robert Burke. Tembo drew his elephant gun to shoot her in defense of the hunters, but his bullets had been stolen, so he was forced to take up a tranquilizer gun instead. By the time he had it ready, the female had left the area, so he tranquilized the male instead. In the meantime, the female chased the remaining hunters into raptor territory, but returned to find her mate and son had been taken. They were brought to San Diego; had InGen’s plan worked, she would probably have been left alone.

The following day, around noon, her family was brought back. Ludlow had met his end at her son’s jaws as the young tyrannosaur’s first kill, and activists had ensured InGen’s plan would fail. For a time, InGen did not interfere with her life.

InGen was thrown into chaos because of what happened in San Diego, and this came after four years of financial turmoil. Returning the tyrannosaurs safely to Isla Sorna was the least they could do now; the company faced bankruptcy afterward, and only by being bought out by Masrani Global Corporation did it avoid shuttering completely. This company was owned by Simon Masrani, a close friend of Hammond’s. Before he died, Hammond had entrusted Masrani with the company’s future and the dinosaurs’ well-being. Working with the U.S. government, Hammond had tried to ensure legal protection for the dinosaurs, but Masrani was the only person he trusted to be directly involved.

Unfortunately, not everyone at InGen had the dinosaurs’ well-being in mind, and certain parties within the company acted illegally to continue research on Isla Sorna in violation of Hammond’s wishes and international law. It is unknown if Simon Masrnai knew about this, but Dr. Wu was probably involved. This activity upset the delicate balance of Isla Sorna, putting the dinosaurs in peril but giving Masrani Global an excuse to publicly intervene once the island’s ecosystem was in total disarray. InGen Security, now under the direction of Vic Hoskins, rounded up some of the surviving dinosaurs and moved them to Isla Nublar. This tyrannosaur, however, was not among them, and instead remained hidden away on Isla Sorna until 2017.

Gatherer team

It was not John Hammond’s original plan to have the Gatherers, as his team was called, encounter tyrannosaurs at all. The idea was for the Gatherers to remain on the outer rim of the island away from the carnivores’ hunting and nesting grounds. Hammond had mapped dinosaur territories by satellite to ensure this was successful. However, when InGen’s Harvester operation arrived sooner than expected, the tyrannosaurs became involved.

Along with freeing the captured dinosaurs, environmental activist and video documentarian Nick Van Owen rescued the kidnapped baby tyrannosaur; he and paleobiologist Dr. Sarah Harding brought the juvenile to their camp where they mended his broken leg. This drew the ire of his parents, who did not understand that their son was being helped. Tracking his scent and listening to his distress calls, the juvenile’s mother and father located him at the Gatherer camp and threatened the humans. By now, the group within the camp trailers included mathematician Dr. Ian Malcolm, who had prior experience with Tyrannosaurus rex. The mother rammed one of the vehicles over a cliff to make a threat display, and then approached the trailer to comfort her son and intimidate the humans. With this persuasive argument, her son was released, leg in a cast but otherwise unharmed. After bringing her son to the safety of the treeline, both adults rammed the trailers, pushing the rear car over the cliffs and leaving it dangling hundreds of feet above the rocky coast. Minutes later, another car arrived to aid the humans in the trailer; equipment specialist Eddie Carr was at the wheel. The tyrannosaurs were drawn back to the campsite by this commotion. The female held the vehicle in place so her mate could pull Carr out of it, and between her and her mate, the man was killed. Carr’s lower half was carried off by the female, likely fed to her son.

It seemed as though the conflict was over, but her son’s scent still lingered outside of the nest, and it mingled with the smell of humans. This confused the female and her mate, and both of them trusted their sense of smell enough to go and investigate. They followed the humans into the island interior, and by nightfall the humans stopped moving; they had set up camp once again. She lurked in the forest while her mate investigated a tent where their son’s smell was strongest. Other humans soon saw her mate and panicked, so she attacked. Along with the hunters she chased down a ravine were three members of the Gatherer team, Nick Van Owen and Dr. Harding as well as Malcolm’s daughter Kelly; they all escaped her jaws when she found another victim.

This was the last she saw of the Gatherers during the incident, but they would do her one final favor to make up for all the trouble her family experienced in those two days. Unbeknownst to her, Drs. Malcolm and Harding were responsible for rescuing her son from InGen’s clutches and her mate from the bullets of the San Diego Police Department. Thanks to their efforts, her family was reunited, safe and alive, by noon that day.

It is unlikely she saw them again.

General public

Although she has not been in the spotlight as much as other members of her family, this female was directly involved with the events that led to de-extinction becoming public knowledge. She was the only one of the three not to partake in the San Diego incident, so she was not a major feature in the news, but the public likely knew of her existence from the testimonies of survivors such as Dr. Sarah Harding. In the years following the 1997 incidents, the public clamored for access to Isla Sorna, and while this did bring much attention to the issue of de-extinct animal rights, not all impacts were positive. The island was affected by illegal ecotourism and poaching, with many of the trespassers probably hoping to sight this tyrannosaur family. She was not the famous one, but her mate and son were elevated to celebrity status, and so she was probably caught up in these events too.

In the Biosyn Genetics Sanctuary, the tyrannosaurs both are currently monitored by the United Nations.

Biosyn Staff

In 2017, a major operation at Isla Sorna saw Biosyn Genetics operatives land there using a vessel disguised as a tourist ship and capture a number of animals. This tyrannosaur was among the creatures taken away from the island, and she was brought across the world to Biosyn Valley and introduced there along with the other Isla Sorna animals. This was done under the direction of Biosyn’s CEO Lewis Dodgson, who sought to study the animals’ biopharmaceutical applications.

For the most part the tyrannosaurs were treated well in the Biosyn Genetics Sanctuary. Their health was paramount to Biosyn’s objectives, so they were constantly monitored from the series of observation posts. To direct them around the valley if they needed to be moved, all the animals were outfitted with implants that could stimulate their nervous systems and command them to move. Generally, the dinosaurs were allowed to roam as they pleased, and were only controlled when necessary.

Dodgson’s practices in stocking the valley were not always well-thought-out. Sometime between 2018 and 2022, his scientists bred a Giganotosaurus, which grew large enough to compete with the tyrannosaurs and bully them. After the events of 2022, in which communications administrator Ramsay Cole acted as a whistleblower on Biosyn’s Hexapod Allies program, the United Nations began to intercede in Biosyn Valley. With Dodgson no longer in charge and higher authorities overseeing developments there, the tyrannosaurs will presumably be well cared for the remainder of their lives.


The female Tyrannosaurus is portrayed through a combination of life-sized animatronics and computer-generated imagery. Her animatronic was built from lighter materials than the male’s to make it easier to use and transport, since she had less screentime and fewer action sequences. She is loosely based on the female tyrannosaur in Michael Crichton‘s novel, but her role is somewhat different in the film.

Her nickname, “the doe,” is not used in the films or any official capacity at all. It is purely a fan nickname, intended to parallel referring to the male as “the buck.”

Concept art indicates that, in some unmade versions of the film, she would have been involved with the San Diego incident alongside the male. The final film includes only the male in San Diego, probably for budgetary reasons.

She reappears in 2022’s Jurassic World: Dominion, making a brief cameo in the closing sequence. For this film, her CGI model was simply a slight rework of the main tyrannosaur.