Konrad Wothe / Brown Mouse Lemur (Microcebus rufus), Madagascar

Mark Carwardine / Madame Berthe's mouse lemur {Microcebus berthae} being released from live trap, Kirindy Forest, western Madagascar, Smallest primate in the world, Endangered

Mark Carwardine / Madame Berthe's mouse lemur {Microcebus berthae} after release from live trap, Kirindy Forest, western Madagascar. Smallest primate in the world, Endangered

Mark Carwardine / Madame Berthe's mouse lemur {Microcebus berthae} being released from live trap, Kirindy Forest, western Madagascar. Smallest primate in the world, Endangered

Mark Carwardine / Madame Berthe's mouse lemur {Microcebus berthae} being released from live trap, Kirindy Forest, western Madagascar. Smallest primate in the world, Endangered

Mark Carwardine / Madame Berthe's mouse lemur {Microcebus berthae} being released from live trap, Kirindy Forest, western Madagascar. Smallest primate in the world, Endangered

Loic Poidevin / Grey / Lesser mouse lemur (Microcebus murinus) sucking sap from tree, Madagascar.

Inaki Relanzon / Goodman's mouse lemur (Microcebus lehilahytsara) clinging to branch, Andasibe Mantadia National Park, Madagascar, September

Rod Williams / Grey / Lesser Mouse Lemur (Microcebus murinus) Captive, occurs Western Madagascar

Pete Oxford / Lesser mouse lemur {Microcebus murinus} looking up at night, Kirindy Forest, Madagascar

Gerry Ellis / Gray Mouse Lemur (Microcebus murinus) eating, Woodland Park Zoo, Seattle, Washington

Andy Rouse / Grey mouse lemur (Microcebus murinus) on branch in spiny forest at night, Madagascar

Thomas Marent / Goodman's Mouse Lemur (Microcebus lehilahytsara) pair in nest, new species discovered in Aug 2005, Masoala National Park, Madagascar

Thomas Marent / Goodman's Mouse Lemur (Microcebus lehilahytsara) in nest, new species discovered in Aug 2005, Masoala National Park, Madagascar

Thomas Marent / Brown Mouse Lemur (Microcebus rufus) at night, Berenty Private Reserve, Madagascar

Jouan & Rius / Gray / Lesser mouse lemur (Microcebus murinus) at night, Nahampoana reserve, Madagascar South

Thomas Marent / Pygmy Mouse Lemur (Microcebus myoxinus) portrait, Morondava, Madagascar

Jouan & Rius / Lesser / Grey mouse lemur (Microcebus murinus) in tree at night, Nahampoana reserve, South Madagascar

Jouan & Rius / Lesser mouse lemur (Microcebus murinus) on branch at night, tropical dry forest, Madagascar

Nick Garbutt / Grey-brown Mouse Lemur {Microcebus griseorufus} portrait in tree, Spiny forest, south western Madagascar

Rod Williams / Lesser / Grey mouse lemur {Microcebus murinus} captive, from NW Madagascar

Rod Williams / Coquerel's dwarf / mouse lemur {Microcebus coquereli} captive, from Madagascar

Rod Williams / Coquerel's dwarf / mouse lemur {Microcebus coquereli} captive, from Madagascar

Rod Williams / Coquerel's dwarf / mouse lemur {Microcebus coquereli} juvenile, captive, from Madagascar

Pete Oxford / Russet mouse lemur {Microcebus rufus} Kirindy, Madagascar

Pete Oxford / Russet mouse lemur {Microcebus rufus} held in hand to show small size, Kirindy, madagascar

Pete Oxford / Russet mouse lemur {Microcebus rufus} Montagne D'ambre NP, Madagascar

Pete Oxford / Russet mouse lemur held in hand {Microcebus rufus} captive, Kirindy Dry Forest Reserve, Madagascar

Gerry Ellis / Gray Mouse Lemur (Microcebus murinus) preparing to pounce on insect prey, native to Madagascar

Gerry Ellis / Gray Mouse Lemur (Microcebus murinus) on branch, endemic species in Madagascar

Rod Williams / Lesser mouse / Grey lemur {Microcebus murinus} looking out of hole in tree trunk, captive, from Western Madagascar

Rod Williams / Coquerel's dwarf lemur, vulnerable species native to Madagascar

Bernard Walton / Presenter Charlotte Unlenbroek with Pygmy mouse lemur {Microcebus myoxinus}, on location in Madagascar, filming for BBC television series "Cousins", 1999