The yellow baboon is a baboon

Baboon

Baboons are African and Arabian Old World monkeys belonging to the genus Papio, part of the subfamily Cercopithecinae. There are five species, which are some of the largest non-hominoid members of the primate order; only the mandrill and the drill are larger...

 from the Old World monkey

Old World monkey

The Old World monkeys or Cercopithecidae are a group of primates, falling in the superfamily Cercopithecoidea in the clade Catarrhini. The Old World monkeys are native to Africa and Asia today, inhabiting a range of environments from tropical rain forest to savanna, shrubland and mountainous...

 family.

Cynocephalus literally means "dog-head" in Greek due to the shape of its muzzle and head. It has a slim body with long arms and legs and a yellowish-brown hair. It resembles the Chacma baboon

Chacma Baboon

The Chacma baboon , also known as the Cape baboon, is, like all other baboons, from the Old World monkey family. With a body length of up to 115 cm and a weight from 15 to 31 kg, it is among the largest and heaviest baboon species. The Chacma is generally dark brown to gray in color,...

 but is smaller and its muzzle is not as elongated. The hairless face is black, framed with white sideburns. Males can grow to about 84 cm, females to about 60 cm.