Explanation:

All species of ‘Lemur’ are endemic to Madagascar. Endemism is the ecological state of being unique to a defined geographic location, such as an island, nation or other defined zone, or habitat type.The rarest lemur is now the northern sportive lemur (Lepilemur septentrionalis), which has an estimated population of just 50 individuals. The famous ring-tailed lemur (Lemur catta), the most common primate in captivity around the world, is expected to now be listed as “endangered.”