Carnivores include the cheetah, which is widely seen due to the abundance of gazelle, about 3,500 spotted hyena, two species of jackal, African golden wolf, honey badger, striped hyena, caracal, serval, seven species of mongooses, two species of otters and the East African wild dog of 300 individuals, which was recently reintroduced (locally extinct since 1991). Apart from the safari staples, primates such as yellow and olive baboons, patas monkeys, and vervet monkey, black-and-white colobus are also seen in the gallery forests of the Grumeti River.