The grey mouse lemur is one of the world's smallest primates, and one of the smallest lemurs on the island of Madagascar. The grey mouse lemur was named after it's size and appearance that resembles that of a mouse (in a similar way to the other mouse lemur species). Although threatened, the grey mouse lemur is considered to be one of the most abundant primates on the island.
Like all other lemur species, the grey mouse lemur is native to, and found only on, the island of Madagascar, off the eastern coast of Africa. Grey mouse lemurs inhabit native tropical woodlands and forests where they spend the majority of their lives nesting in the trees. Grey mouse lemurs are usually found perching on thin branches and occupy ranges of up to 5 acres in size.