Baboon
Baboon in Tree (Enlarge)
Taken in Tsavo West National Park, Kenya, in February 2010.
The yellow baboon (Papio cynocephalus) lives around 20 -- 30 years, and has a tail that is almost as long as its body. The Greek 'Cynocephalus' means 'dog-head', and was given due to the shape of its muzzle.