Habitat: Inhabits both arid and humid regions of the tropics and subtropics. More common in cattle country, less common in mature undisturbed forests. Distribution: Northern Mexico through Central America to northern Argentina and Uruguay. Also on Trinidad. Seldom found above 1000 m. Natural History Notes: Guild 7: Highly Cluttered Space/Gleaning Sanguivores (Kalko, et. al., 1996). Roosts primarily in caves but may occupy hollow trees, culverts, and mines. Colony size usually small, rarely in the hundreds of individuals. Feeds on blood of mammals and birds, especially domestic animals. Can move and jump on ground to approach prey. Saliva has an anticoagulant to delay clotting of victimÂs blood. Altruistic social organization, with fed bats regurgitating blood to those who did not find food. Reproduction seems to involve continuous polyestry (e.g., year-round breeding). Characteristics: Medium size. Fur short, dorsal pelage grayish brown or orangish, ventral surface whitish brown, often frosted. Ears medium, pointed, M-shaped nosepad around nostrils. Groove in lower lip. Thumbs long with two pad on underside. Tail absent, tail membrane U-shaped, sparsely haired. Two knife-like upper incisors, long canines, vestigial premolars and molars. Forearm 50-63 mm, Mb 15 Â 50 gms.