Erinaceidae is the biological family of mammals that includes the 23 species of hedgehogs and gymnures. Erinaceids are perhaps the most similar of all extant mammals to the earliest mammals, and can be found in Eurasia, Africa, southeastern Asia and Borneo. They range in size from that of a shrew to a small rabbit. Hedgehogs (but not gymnures) are covered with sharp spines. Erinaceids live under logs or in burrows that they dig. Hedgehogs are nocturnal, but gymnures are less so, and may be active during the day. They are omnivorous.
– Erinaceus europaeus