The term 'cave animal' can be summarized by the three-letter word 'BAT'. Bats are mammals of the order Chiroptera, which are the only mammals capable of true flight. They are found in almost every part of the world and live in a variety of habitats, including caves. Bats are nocturnal and feed on insects, fruit, and nectar. They are important for pollination and seed dispersal, and some species are even endangered.