A Brachiosaurus animatronic was built by Stan Winston Studios for the first Jurassic Park film. Its only appearance was a scene in which it interacts with Grant, Lex and Tim in a tree. All other scenes involving the animal are CGI.
Design
The Brachiosaurus was designed by Stan Winston Studios artist Mark “Crash” McCreery and based off of specimens of Brachiosaurus brancai, now called Giraffatitan.
Full-Sized Animatronic Brachiosaurus
Andy Shoneberg, a key artist at Stan Winston Studios, worked on the Brachiosaurus puppet. The Brachiosaurus was the largest puppet built that contained no hydraulics. The puppet consisted of only 
the neck and head and stood around 2.3 meters (7.5ft). Stan Winston wanted the animal to be very docile so Shoneberg, and the rest of the crew working on the animatronic, installed a four-axis jaw that not only moved up and down, but side to side. This gave the animal a very cow-like appearance. In all, six puppeteers controlled the animatronic; either controlling the eyes, jaws, tongue, lips, or the head and neck.
Works Cited- JURASSIC PARK Brachiosaurus Animatronic Puppet Rehearsal. Stan Winston School of Character Arts (2013)
