犬吻蝠科，哺乳纲、翼手目的一科，而犬吻蝠科辖下则有真蝠属（大真蝠）、加勒比海犬吻蝠属（秘鲁犬吻蝠）、獒蝠属（獒蝠）、裸蝠属（裸蝠）、非洲犬吻蝠属（加纳犬吻蝠）等等之数种哺乳动物。

The Molossidae, or free-tailed bats, are a family of bats within the order Chiroptera. They are generally quite robust, and consist of many strong flying forms with relatively long and narrow wings. Another common name for some members of this group, and indeed a few species from other families, is mastiff bat. The western mastiff bat, Eumops perotis, a large species from the southwestern United States and Mexico with wings over 0.5 m (1.6 ft) across, is perhaps one of the best known with this name. They are widespread, being found on every continent except Antarctica.