Nick Garbutt / Grey mouse lemur (Microcebus murinus) on tree trunk at night, Kirindy Forest, Madagascar.

Nick Garbutt / Madame Berthe's mouse lemur (Microcebus berthae) left, world's smallest primate, and Grey mouse lemur (Microcebus murinus) right, held in hand for comparison. Kirindy forest, western Madagasca...