A new survey has found that there are more mountain gorillas living in the wild than 30 years ago. Scientists think there are now 780 in the world.
Mountain gorillas only live in two areas - both in Africa. Most live in the Virunga Massif - an area of parks that covers three countries. This is where the latest survey was done.
It found 480 mountain gorillas living there. Scientists think the number is on the up with countries doing more to protect their habitat. They say they are still under threat though.