The bat-eared fox (Otocyon megalotis) is a species of fox found on the African savanna, named for its large ears, which are used for thermoregulation. Fossil records show this canid first appeared during the middle Pleistocene, about 800,000 years ago. It is considered a basal canid species, resembling ancestral forms of the family.
The bat-eared fox (also referred to as Delalande's fox, long-eared fox, big-eared fox, and black-eared fox) has tawny fur with black ears, legs, and parts of the pointed face. It averages 55 centimetres (22 in) in length (head and body), with ears 13 centimetres (5.1 in) long. It is the only species in the genus Otocyon. The name Otocyon is derived from the Greek words otus for ear and cyon for dog, while the specific name megalotis comes from the Greek words mega for large and otus for ear.