Chimpanzees are found only on the continent of Africa along the western coast in Guinea and Sierra Leone, as well as part of Central Africa from Uganda to Tanzania, remaining north of the Congo River. They are found in lush rainforests, as well as less dry forests and savannas with trees and foliage. Temperatures can range from 24*C-49*C. Chimpanzees tend to live in wetter conditions where vegetation, insects, and water can easily be found. However they have been found to live in dry areas with lesser vegetation. A treetop canopy is almost a necessity, as they nest in the treetops each night to avoid predators, and to provide a safe rest for their young. In general Chimpanzees are always on the move but in the same general area of 10 to 20 square miles, living in small communities of 15 or less, but do gather in large social groups occasionally. This number can reach up to 120 chimpanzees together at once. In general, they live happily and more commonly in the rainforest setting, sharing life with birds, insects, other monkeys, and predators such as large eagles and leopards. The treetop, canopy life is the life of a Chimpanzee. The Chimpanzee can also be found in many zoos across the world. Due to its high intelligence and proof by DNA sequencing that the Chimpanzee is the closest relative to humans, they have been used in research by many scientists across the world.