Dense mangrove forests grow along the river mouths. Farther inland, the typical vegetation of Lower Guinea is woodland dominated by parinari, with many woody climbers and bushes below. Gum copal is common near streams. The Futa Jallon has been subject to excessive burning, and the lower slopes are characterized by secondary woodland, much sedge (catagyna pilosa), and expanses of laterite; the higher plateaus and peaks have dense forest, and some plants found nowhere else in the world have been reported on them. Savanna woodland characterizes Upper Guinea, with only tall grass in large areas; trees include the shea nut, tamarind, and locust bean. There is rain forest along the border with Liberia.
The elephant, hippopotamus, buffalo, lion, leopard, and many kinds of antelope and monkey are to be found in Guinea, as well as crocodiles and several species of venomous snakes. Birds are plentiful and diverse.
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