Identification: Lepilemur septentrionalis (northern sportive lemur)
Contributors: Michigan Science Art (copyright holder)
Source: http://animaldiversity.org/accounts/Lepilemur_septentrionalis/
Source: http://animaldiversity.org/accounts/Lepilemur_septentrionalis/pictures/collections/contributors/Grzimek_mammals/Lepilemuridae/Lepilemur_septentrionalis/

The northern sportive lemur (Lepilemur septentrionalis), also known as the Sahafary sportive lemur or northern weasel lemur, is a species of lemur in the family Lepilemuridae. It is endemic to Madagascar. As a result of severe ecological and human pressures, the lemur is classified as Critically Endangered (CR) by the IUCN Red List, and is one of the world's most endangered primate species. Order: Primates, Suborder: Strepsirrhini, Family: Lepilemuridae.