This last theory explains why this adaptation is only found in the New World. However, none of these theories are proven. In any case, vampire bats are a fantastic example of specialization in the evolutionary process. Vampire bats roost in caves, mines, tree hollows and occasionally abandoned buildings. They are low flyers and maneuver through the understory quite well, due to their long, narrow wings.
Vampire bats are very adept in terrestrial locomotion.
They have elongated thumbs that aid in moving around. Vampire bats are capable of jumping straight up and flying. This technique is uncommon in other bats. The most intriguing aspect of vampire bats is their diet and how they get their food. Vampire bats have the fewest teeth of all bats.