#molossidae

Hairless Bat or Naked Bulldog Bat (Cheiromeles torquatus), family Molossidae, found in SE Asia

Cinnamon Dog-faced Bat Cynomops abrasus

A bat from northern and central South America. The bat roosts in decayed logs and hollow trees, and tends to pick relatively warm area to roost. They are insectivorous and usually feed on hard-shelled insects.

Mauritian Little Mastiff Bat Mormopterus acetabulosus

It is endemic to the island of Mauritius. It is known from fewer than five locations in its range, but it is common at a few sites. It roosts in caves, and it is considered to be an endangered species due to disturbance of its cave habitat.

Endangered

If you're in Florida, keep your ears pricked for the Florida bonneted bat! This species has one of the lowest calls of any bat, at about 15 kHz-- just within hearing range for most adults. This is likely due to the Florida bonneted bat's hunting practices; Eumops floridanus tends to fly higher than other bats, and isn't as acrobatic when it comes to hunting insects, so it doesn't need to rely on echolocation as much.

(Image: A Florida bonneted bat (Eumops floridanus) by Dustin Smith)