Wroughton's Free-tailed Bat (Otomops wroughtoni) - Fact sheet from EDGE, a conservation organization that focuses specifically on threatened species that represent a significant amount of unique evolutionary history. Gallagher's Free-tailed Bat (Chaerephon gallagheri) - Fact sheet on this critically endangered species known only from the Democratic Republic of Congo. Brazilian Free-tailed Bat (Tadarida brasiliensis) - Description, photograph, distribution and habits, from the Mammals of Texas. Pocketed Free-tailed Bat (Nyctinomops femorosacca) - Description, distribution and habits, from the Mammals of Texas. Big Free-tailed Bat (Nyctinomops macrotis) - Description, photograph, distribution and habits, from the Mammals of Texas. Western Mastiff Bat (Eumops perotis) - Photograph, description, distribution in Texas and habits.