These friendships may play a role in the mating system of chacma baboons. Adoption behavior has been observed in chacma baboons. Primates are represented by bushbabies, vervet monkeys, blue monkeys, chacma baboons and yellow baboons. The bulb is a favoured dietary item of the Chacma baboon. The female chacma weighs from , with an average of . Chacma troops are characterized by a dominance hierarchy. Chacma baboons inhabit the southern parts of the park. Males and female chacma baboons often form relationships referred to as "friendships". The Cape chacma is a large, heavy, dark-brown, and has black feet. The chacma baboon is widespread and does not rank among threatened animal species. Female chacma baboons have been observed to compete with each other for male friends. The largest primate in the region, excluding humans, is the chacma baboon. The chacma baboon has two or three subspecies, depending on which classification is followed. They resemble the Chacma baboon, but are somewhat smaller with a less elongated muzzle. Fred (died 25 March 2011) was a chacma baboon from Cape Town, South Africa.