There are approximately 147 known species of wild mammals within Sierra Leone. There are three species of wild pig that occur across Sierra Leone: the
wart hog, the
giant forest hog and the
red river hog. Sierra Leone has 15 identified species of
primates that include
bushbaby, monkeys and a great ape, the
common chimpanzee which is Sierra Leone's largest primate. Chimpanzees are found across the country with the 2010 chimpanzee census estimated a wild population in excess of 5500 more than double the number previously thought to live in the country. This is the second largest population of the endangered subspecies of western chimpanzee, after
Guinea, with the largest density in the
Loma area, 2.69 individuals per km2, and the
Outamba, with 1.21 individuals per km2. There are several species of
whales and the
African manatee in the waters of Sierra Leone. The manatee is an endangered species and lives in the rivers and estuaries of Sierra Leone especially around
Bonthe. Mammals found in Sierra Leone include: •
Hippopotamus •
African forest elephant •
Bongo •
Duiker •
African forest buffalo •
Diana monkey •
African leopard •
Olive baboon •
Guinea baboon •
Western chimpanzee •
Waterbuck •
Western red colobus •
Red colobus •
Green monkey •
Red river hog •
Warthog •
Lesser spot-nosed monkey •
Black-and-white colobus •
Pygmy hippopotamus •
Serval •
African wild dog ==Birds==