Eastern gorilla
There are two recognised subspecies of eastern gorilla: the mountain gorilla ("Gorilla beringei beringei") of the volcanic slopes of Rwanda, Uganda and eastern Democratic Republic of Congo; and Grauer's gorilla or eastern lowland gorilla ("Gorilla beringei graueri") in eastern Democratic Republic of Congo.
Largest prehistoric animals
There are two contenders for largest-known ever arachnid: "Pulmonoscorpius kirktonensis" and "Brontoscorpio anglicus". Pulmonoscorpius was Brontoscorpio was . The biggest difference is that "Brontoscorpio" was aquatic, and "Pulmonoscorpius" was terrestrial. "Brontoscorpio" is not to be confused with various Eurypterids: it was a true scorpion with a venomous stinger.