There are 4 gorilla subspecies

The cross-river gorilla, mountain gorilla, western lowland gorilla, and eastern lowland gorilla are the four subspecies of gorillas. The Congo basin is home to all species but in slightly varied regions.

The cross river gorillas, which number barely 250, weren't counted until the 1980s, and it wasn't until 2009 that footage of them was obtained. At the source of the cross river, in the hills between Nigeria and Cameroon, they reside. Since humans have encroached on their native environment, which has resulted in a major drop in the number of these lovely animals, cross river gorillas also reside in areas where humans are highly populated.

Of all the subspecies, the western lowland gorilla is the most numerous; there are roughly 100,000 of them in the wild. They live in marshes and lower elevation woods in central Africa.

Mountain gorillas (approximately 1,050 individuals) and eastern lowland gorillas are two species of gorillas found in the east (fewer than 4,000 individuals, down from 17,000 in the 1990s). The largest of the gorilla species, eastern lowland gorillas have less hair than their mountain counterparts. Since they can only be found in the jungles of the eastern Democratic Republic of the Congo, eastern lowland gorillas are the most difficult to locate (DRC).

Since they reside in the cloud forests of the Virunga Volcanoes at higher heights and colder climates, mountain gorillas have the most hair of the species.