Vampire bats? Hardly. The flying mammals at Regenstein Small Mammal-Reptile House are Egyptian fruit bats and straw-colored fruit bats, which prefer sucking nectar to human blood. Keepers are so comfortable around the bats that they enter the exhibit every day, allowing the winged residents to flutter around them. The two species occupy different sections of their exhibit, but they’re all busybodies—they squeak to each other and flap their wings when keepers arrive, hoping to get first crack at snacks.