The Hamadryas baboon or Papio hamadryas is a member of the New World monkeys. The New World monkeys are arboreal and most live in extremely dense forests, where it is sometimes difficult to see the animals or to follow them for long. The distribution of the species within this grouping is from Southern Mexico into South America. The New World monkeys evolved independently from a New World promisian, and the similarities with the Old World monkeys are due to parallel evolution according to Phyllis Dolhinow (1972, p.7).
However, the Hamadryas baboon lives in exceedingly arid country where there is a sparse food supply and few sleeping trees. Principally, they are inhabitants of wooded savannahs, grasslands, acacia scrubs and semi-desert, as long as there is access to water.
They inhabit much of Africa, south of the Sahara, and extend into southwest Arabia as stated by Phyllis Dolhinow (1972, p.47).
The Hamadryas baboon is a large dog-like terrestrial animal that exhibits sexual dimorphism in their size.
The males are usually up to two times the weight of the females. The males have a massively built skull that shows a large saggital crest. The eyes are placed in sockets in the skull in a forward facing manner, and they are binocular in their vision as said by Preston-Mafham (1992, p.24). The forward facing manner of the placement of the eyes in the baboon is at the expense of a reduced size of their muzzle, and is made up for by the elongation of the snout. But, the reduction of the muzzle has resulted in a reduction of their sense of smell which was read according to Napier (1985, p.67).
The body structure of the baboon allows for them to hang from trees. They have retained the collar bone or clavicle, and have...