The national park is known for its wildlife. The government of Senegal estimates the park contains 20 species of amphibians, 60 species of fish, 38 species of reptiles (of which four are tortoises). There are some 80 mammal species. These included (as of 2005) an estimated 11000 buffaloes, 6000 hippopotomii, 400 western giant eland, 50 elephants, 120 lions, 150 chimpanzees (It is inhabited by a banded forest in the park (Lower Rim) and Mount Assirik. (north-western limit line where chimps are distributed.)), 3000 waterbuck (Kobus ellipsiprymnus), 2000 common duiker ("Sylvicapra grimmia"), an unknown number of red colobus ("Colobus badius rufomitratus") and a few rare African leopards and West African wild dogs ("Lycaon pictus manguensis"), although this canid was thought to be wiped out throughout the rest of the country.