Sapo National Park is a national park in Sinoe County, Liberia. It is the country's largest protected area of rainforest and its only national park, and contains the second-largest area of primary tropical rainforest in West Africa after Taï National Park in neighbouring Côte d'Ivoire. 

The national park has an area of 1,804 km2 and was established in 1983. Agriculture, construction, fishing, hunting, human settlement, and logging are prohibited in the park. 

Sapo National Park is located in the Upper Guinean forest ecosystem, a biodiversity hotspot that has "the highest mammal species diversity of any region in the world", and in the Western Guinean lowland forests ecoregion, according to the World Wide Fund for Nature's ecoregions classification scheme.

Sapo National Park is a "regional centre of endemism" and biodiversity, at one time hosting around 125 mammal species and 590 types of bird, including a number of threatened species, such as the African golden cat, drill, Gola malimbe, Liberian mongoose, white-breasted guineafowl, and white-necked rockfowl. 

The park is also home to the African civet, African fish eagle, grey parrot, giant forest hog, great blue turaco, speckle-throated otter, water chevrotain, three species of pangolin, seven species of monkey (including the endangered Diana monkey), crocodiles, leopards, bee-eaters, egrets, hornbills, kingfishers, rollers, and sunbirds.

According to en.wikipedia