Description from Wikipedia

Colugos (pronounced /kəˈluːɡoʊ/) are arboreal gliding mammals found in South-east Asia. There are just two extant species, which make up the entire family Cynocephalidae (pronounced /saɪˈnə.sɛfˈɑːləˌdiː/) and order Dermoptera. They are the most capable of all gliding mammals, using flaps of extra skin between their legs to glide from higher to lower locations. They are also known as cobegos or flying lemurs, though they are not true lemurs.