Head of Mastiff Bat Small 315×320 Medium 630×640 Large 1007×1024 Download Tiff Original 2361×2400 | (2.0 MB) Description 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. Keywords free tailed bat, head, mammal, mastiff bat Galleries Bats, Mammals: B Source: Encyclopaedia Britannica (11th ed., vol. 6) (New York, NY: The Encyclopaedia Britannica Company, 1910)