These slopes are home to a number of endemic wildlife species, including the endangered walia ibex ("Capra walie") and the gelada baboon, whose thick fur allows it to thrive in the cooler climates of the mountains. These two species are only found on the northern side of the valley, while another rare endemic, the mountain nyala ("Tragelaphus buxtoni") is restricted to the southern side, and now survives at higher altitudes than its original habitat since the lower slopes are heavily farmed. More widespread mammals found here include the mantled guereza ("Colobus guereza"), which is also threatened as its habitat disappears as does that of many other mammals of the highlands such as olive baboon ("Papio anubis"), Egyptian wolf ("Canis aureus"), leopard ("Panthera pardus"), lion ("Panthera leo"), spotted hyena ("Crocuta crocuta"), caracal ("Caracal caracal"), serval ("Leptailurus serval"), common duiker ("Sylvicapra grimmia"), and giant forest hog ("Hylochoerus meinertzhageni"). Birds include Rueppell's chat, the finch Ankober serin ("Serinus ankoberensis"), white-winged flufftail ("Sarothrura ayresi"), and blue-winged goose. The farmland is home to many butterflies, especially "Papilio", Charaxinae, Pieridae and Lycaenidae.