Wildlife of Sierra Leone
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.
Phong Nha-Kẻ Bàng National Park
The park is home to significant populations of primates in Vietnam, with ten species and sub-species. These include the globally vulnerable pig-tailed macaque, Assam macaque, stump-tailed macaque and white-cheeked crested gibbon ("Nomascus leucogenys" and "Nomascus leucogenys siki"). The park is probably home to the largest population of François' langur in Vietnam, including two different forms of the species. The area is highly significant for its population of Hatinh langur and black langur. It is undoubtedly the largest population of these species in the world, and probably the only population represented in a protected area. Other endangered large mammals include the mainland serow ("Capricornis sumatraensis"), giant muntjac ("Megamuntiacus vuquangensis") and possibly the saola ("Pseudoryx nghetinhensis"). The Asian black bear ("Selenarctos thibetanus") and sun bear ("Helarctos malayanus") are confirmed. Other smaller mammals include Sunda pangolins ("Manis javanica") and the recently discovered striped hare, called locally "tho van" ("Nesolagus timminsii"). Ten bat species listed in the IUCN List of Threatened Species have been recorded in this park.