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.
Okavango Delta
The most populous large mammal is the lechwe antelope, with more than 60,000. It is a bit larger than an impala with elongated hooves and a water-repellent substance on their legs that enables rapid movement through knee-deep water. They graze on aquatic plants, and like the waterbuck, take to water when threatened by predators. Only the males have horns.