The white-winged vampire bat (Diaemus youngi) is a species of bat in the leaf-nosed bat family Phyllostomidae. It is native to Latin America, being found from Mexico in the north to Argentina in the south. This mammal grows about 3.3 inches long and is the only known species of bat with exactly twenty-two teeth. It is considered a species of least concern by the International Union for Conservation of Nature. White-winged vampire bats are social animals, and are hematophagous like all vampire bats; they consume about half a fluid ounce of blood per day. They prefer bird blood, although they will also drink from mammals. This species will happily associate with many other types of bats without issue.
