Bat (scientific name:Chiroptera）It is a type of animal in the phylum Chordata and class Mammalia, and the only mammal that can truly fly; In addition to the characteristics of general mammals, there are also a series of morphological features adapted to flight [1]  The smallest is the mixed bat, which weighs only1.9Ke, wingspan16Centimeters; Some bats can weigh over1.3Kilogram, wingspan up to1.7Rice. Bats have light overall bone mass, high degree of skull healing, well-developed shoulder straps, and keel like protrusions on the sternum. Degeneration of the tibia and fibula in the hind limbs. The ear shell is well-developed, often with a well-developed tragus or tragus. There are abundant sensory hairs on the wing membrane, ears, lips, and other areas. There are various colors, mostly brown, gray, and black.