The chimpanzee, commonly abbreviated to chimp, is a medium-sized great ape species found in the forests and savannas of equatorial Africa. It has four confirmed subspecies and a fifth proposed one. The chimpanzee shares the genus Pan with the bonobo. Evidence from fossils and DNA sequencing shows that the two species are humans' closest living relatives. The chimpanzee is bigger and more robust than the bonobo. It is covered in coarse black hair but has a bare face, fingers, toes, palms of the hands, and soles of the feet.