Description: Sanje Mangabey, (Cercocebus galeritus sanjei), Tanzania, Eastern Arc Mountains and Coastal Forests of Tanzania and Kenya, Discovered in 1981, this large, ash-gray monkey lives in the Udzungwa Mountains of Tanzania. Hunting threatens the survival of the less than 1,500 remaining.
Credit: Jonathan Kingdon
Copyright: Jonathan Kingdon
Source:  Conservation International