Dung beetles are beetles that feed partly or only on the dung of mammals. They are a kind of scarab beetle. All these species belong to the superfamily Scarabaeoidea, and most of them to the family Scarabaeidae. The subfamily Scarabaeinae alone has more than 5,000 species. There are dung-feeding beetles in other related families, such as the Geotrupidae (the 'earth-boring dung beetles').