Ghost-faced bat

The ghost-faced bat is of medium size with a reddish-brown to dark-brown appearance. The reddish color becomes more prominent as the pelage ages. This particular bat undergoes molting, usually between June and September. On the dorsal side, molting starts on the shoulders and spreads over the back, whereas on the ventral side molting usually begins under the wings, on the neck and chin and then spreads down across the abdomen. The faces of these bats have a 'smashed-in' appearance. This odd appearance is the result of four combining factors; they do not have well-developed noses, their foreheads rise abruptly from their noses, their faces are composed of very thick dermis and muscle fibers, and they have large, round ears that seem to join across the forehead. These bats maintain an unusually high body temperature, usually a few degrees higher than the ambient temperature. As a result, they are sensitive to temperatures under 10 °C and can only survive in these colder temperatures for a few hours before they succumb to hypothermia.