The greater mouse-deer, greater Malay chevrotain or napu (Tragulus napu) is a species of even-toed ungulate in the Tragulidae family. It is found in Sumatra, Borneo and smaller Malaysian and Indonesian islands, and in southern Myanmar, southern Thailand and peninsular Malaysia. It was thought to be regionally extinct in Singapore until it was rediscovered on an offshore island in 2008. Reports of its occurrence elsewhere are probably incorrect.