The Sunda slow loris (Nycticebus coucang) or greater slow loris is a strepsirrhineprimate and a species of slow loris native to Indonesia, western Malaysia, southern Thailand and Singapore. It measures from head to tail and weighs between . Like other slow lorises, it has a wet nose (rhinarium), a round head, small ears hidden in thick fur, a flat face, large eyes and a vestigial tail.