Miller's mastiff bat

Miller's mastiff bat (Molossus pretiosus) is a bat of the family Molossidae found in Brazil, Colombia, Costa Rica, Guyana, Mexico, Nicaragua and Venezuela. It has a limited distribution, tends to occupy isolated regions, and mainly inhabits lowlands. It has a powerfully built body with a broad frame and narrow wings, a thick mandible compared with other mastiff bats, and a coat that ranges from black to reddish with a white-speckled chest and black ears. Adults weigh about 20 to 28 grams, males tend to be larger than females, and newborns weigh about a quarter of adult weight. It roosts in caves, dry woodland, roofs and thorn scrub near rivers, lakes or watering holes, flies out in a single file at dusk and feeds on beetles and moths. It is listed as Least Concern, with no known threats.