Numbers of the world's largest type of gorilla, the Grauer's gorilla, have fallen dramatically.
The gorilla is now considered "critically endangered" which means they might soon be totally wiped out.
Where do they live?
The gorilla lives in the eastern part of the Democratic Republic of Congo, in central Africa.
The number of gorillas there has fallen from 17,000 in 1994 to just 3,800 today.
Why is it happening?
War in the the Democratic Republic of Congo has affected the number of Grauer's gorillas living there.
The forests where they live are being destroyed because of the fighting.
They have also been illegally hunted for their meat because in some areas there is not enough food to eat.