Chimpanzees are omnivorous and their diet depends on both season and individual preference, although fruit usually makes up around half of their diet. Termites and other insects are often eaten, and groups of chimpanzees also hunt other mammals, such as duikers and small monkeys. Chimpanzees often use tools when feeding, for example using leaves to mop up blood from captured prey, and using sticks to 'fish' for termites in termite mounds.