Chien Lee / Gray Mouse Lemur (Microcebus murinus) in tree hole, Kirindy Forest, Morondava, Madagascar

Chien Lee / Gray Mouse Lemur (Microcebus murinus), Kirindy Forest, Morondava, Madagascar

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

Cyril Ruoso / Reddish-grey mouse lemur (Microcebus griseorufus) in spiny tree. Berenty Reserve, Madagascar.

Lorraine Bennery / Nosy Be mouse lemur (Microcebus mamiratra) in leaf nest. Lokobe Reserve, Nosy Be, Madagascar.

Lorraine Bennery / Nosy Be mouse lemur (Microcebus mamiratra) in leaf nest. Lokobe Reserve, Nosy Be, Madagascar.

Lorraine Bennery / Coquerel's giant mouse lemur (Mirza coquereli) sitting in tree, Kirindy Forest Private Reserve, Madagascar. Endangered.

Lorraine Bennery / Pale fork-marked lemur (Phaner pallescens), drinking sap, Kirindy Forest Private Reserve, Madagascar, Endangered, Endemic.

Lorraine Bennery / Coquerel's giant mouse lemur (Mirza coquereli), climbing down tree at night, Kirindy forest Private Reserve, Madagascar, Endangered, Endemic.

Sandesh Kadur / Goodman's mouse lemur (Microcebus lehilahytsara) in tree. Andasibe-Mantadia National Park, Madagascar.

David Pattyn / Grey mouse lemur (Microcebus murinus) at night, Anjajavy Private Reserve, north west Madagascar.

Konrad Wothe / Mouse lemur (Microcebus murinus) Morondava, Madagascar, Africa. Small repro only.

Bernard Castelein / Pale Fork-marked Lemur (Phaner pallescens), Kirindy forest, Madagascar

Chris Shields / Lavasoa mountains dwarf lemur (Cheirogaleus lavasoensis) illustration.

Chien Lee / Goodman's Mouse Lemur (Microcebus lehilahytsara) feeding on flower nectar, Andasibe-Mantadia National Park, Madagascar

Chien Lee / Goodman's Mouse Lemur (Microcebus lehilahytsara) approaching flowers to feed on flower nectar, Andasibe-Mantadia National Park, Madagascar

Bernard Castelein / Golden-brown mouse lemur (Microcebus ravelobensis), Ankarafantsika National Park, Madagascar

Bernard Castelein / Pale fork-marked lemur (Phaner pallescens) on tree trunk at night, Kirindy Forest, Madagascar.

Bernard Castelein / Pale fork-marked lemur (Phaner pallescens) on tree trunk at night, Kirindy Forest, Madagascar.

Enrique Lopez-Tapia / Furry-eared dwarf lemur (Cheirogaleus crossleyi) Andasibe-Mantadia National Park, Madagascar.

Enrique Lopez-Tapia / Furry-eared dwarf lemur (Cheirogaleus crossleyi) Andasibe-Mantadia National Park, Madagascar.

Enrique Lopez-Tapia / Furry-eared dwarf lemur (Cheirogaleus crossleyi) Andasibe-Mantadia National Park, Madagascar.

Enrique Lopez-Tapia / Grey-brown mouse lemur (Microcebus griseorufus) at night, nocturnal species. Berenty Reserve, Madagascar.

Enrique Lopez-Tapia / Grey-brown mouse lemur (Microcebus griseorufus) at night, nocturnal species. Berenty Reserve, Madagascar.

Enrique Lopez-Tapia / Grey-brown mouse lemur (Microcebus griseorufus) at night, nocturnal species. Berenty Reserve, Madagascar.

Nick Garbutt / Adult Hairy-eared Dwarf Lemur (Allocebus trichotis) in the forest understorey at night. Mitsinjo Forest, Andasibe-Mantadia National Park, eastern Madagascar. Endangered species.

Nick Garbutt / Adult Hairy-eared Dwarf Lemur (Allocebus trichotis) in the forest understorey at night. Mitsinjo Forest, Andasibe-Mantadia National Park, eastern Madagascar. Endangered species.

Nick Garbutt / Fork marked lemur (Phaner sp) either Northern Fork-marked Lemur (Phaner electromontis) or possibly a new species to be described as Daraina Fork-marked Lemur. In the forests near Andranotsimaty, Darai...

Bernard Castelein / Brown Mouse Lemur (Microcebus rufus) Ialasatra, Madagascar

Bernard Castelein / Brown Mouse Lemur (Microcebus rufus) Ialasatra, Madagascar

Bernard Castelein / Brown Mouse Lemur (Microcebus rufus) Ialasatra, Madagascar

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

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

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

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

Pete Oxford / Greater Dwarf Lemur (Cheirogaleus major) in tree at night, Perinet Special Reserve, Madagascar

Pete Oxford / Greater Dwarf Lemur (Cheirogaleus major) on log, Perinet Special 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

Nick Garbutt / Greater dwarf lemur (Cheirogaleus major) Analamazaotra, Madagascar

Suzi Eszterhas / Gray Mouse Lemur (Microcebus murinus) held by researcher, Duke Lemur Center, North Carolina

Joel Sartore / Photo Ark / Fat-tailed dwarf lemur (Cheirogaleus medius) portrait, Plzen Zoo, Czech Republic. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Grey mouse lemur (Microcebus ganzhorni) standing on hind legs, portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.

Joel Sartore / Photo Ark / Grey mouse lemur (Microcebus ganzhorni) portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.

Joel Sartore / Photo Ark / Goodman's mouse lemur (Microcebus lehilahytsara) portrait, Plzen Zoo. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Goodman's mouse lemur (Microcebus lehilahytsara) portrait, Plzen Zoo. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Ganzhorn's mouse-lemur (Microcebus ganzhorni) being held in hands, Plzen Zoo. Captive, occurs in Madagascar. Endangered.

Joel Sartore / Photo Ark / Ganzhorn's mouse-lemur (Microcebus ganzhorni) portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.

Joel Sartore / Photo Ark / Ganzhorn's mouse-lemur (Microcebus ganzhorni) portrait, Plzen Zoo. Captive, occurs in Madagascar. Endangered.

Joel Sartore / Photo Ark / Greater dwarf lemur (Cheirogaleus major) portrait, Parc Botanique et Zoologique de Tsimbazaza, Madagascar. Captive.

Joel Sartore / Photo Ark / Greater dwarf lemur (Cheirogaleus major) portrait, Parc Botanique et Zoologique de Tsimbazaza, Madagascar. Captive.

Joel Sartore / Photo Ark / Greater dwarf lemur (Cheirogaleus major) head portrait, Parc Botanique et Zoologique de Tsimbazaza, Madagascar. Captive.

Joel Sartore / Photo Ark / Brown mouse lemur (Microcebus rufus) resting, portrait, Parc Botanique et Zoologique de Tsimbazaza, Madagascar. Captive.

Joel Sartore / Photo Ark / Brown mouse lemur (Microcebus rufus) portrait, Parc Botanique et Zoologique de Tsimbazaza, Madagascar. Captive.

Joel Sartore / Photo Ark / Brown mouse lemur (Microcebus rufus) portrait, Parc Botanique et Zoologique de Tsimbazaza, Madagascar. Captive.

Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) head portrait, Duke Lemur Center. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) portrait, Duke Lemur Center. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) portrait, Duke Lemur Center. Captive, occurs in Madagascar.

Joel Sartore / Photo Ark / Western fat-tailed dwarf lemur (Cheirogaleus medius) male, Duke Lemur Center. Captive.Species keeps fat stored in its tail in order to go into hibernation for several weeks in the winter.

Joel Sartore / Photo Ark / Western fat-tailed dwarf lemur (Cheirogaleus medius) male, Duke Lemur Center. Captive.Species keeps fat stored in its tail in order to go into hibernation for several weeks in the winter.

Joel Sartore / Photo Ark / Western fat-tailed dwarf lemur (Cheirogaleus medius), Parc Botanique Et Zoologique de Tsimbazaza, Madagascar. Captive.

Nick Garbutt / Fat-tailed dwarf lemur (Cheirogaleus medius) climbing down branch at night, after emergence from hibernation in November, Kirindy Forest, West Madagascar.

Nick Garbutt / Tavaratra mouse lemur (Microcebus tavaratra) sitting on branch at night, Daraina forest, northern Madagascar.

Nick Garbutt / Fat-tailed dwarf lemur (Cheirogaleus medius) looking down from branch in forest at night, Anjajavy forest, north western Madagascar.

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

Nick Garbutt / Crossley's dwarf lemur (Cheirogaleus crossleyi) foraging in rainforest canopy at night, Mantadia National Park, Madagascar.

Roland Seitre / Brown mouse lemur (Microcebus rufus) climbing down a tree trunk at night, Ranomafana National Park, Madagascar.

Roland Seitre / Brown mouse lemur (Microcebus rufus) on tree trunk at night, Ranomafana National Park, Madagascar.

Joel Sartore / Photo Ark / Ganzhorn's mouse lemur (Microcebus ganzhorni) walking out of frame, Zoo Plzen. Endangered. Captive.

Joel Sartore / Photo Ark / Ganzhorn's mouse lemur (Microcebus ganzhorni) profile, Zoo Plzen. Endangered. Captive.

Terry Whittaker / Brown mouse lemur (Microcebus rufus) in tree fork at night. Ranomafana National Park, Madagascar.

Terry Whittaker / Goodman's mouse lemur (Microcebus lehilahytsara). Andasibe Mantadia National Park, Madagascar.

Terry Whittaker / Crossley's dwarf lemur (Cheirogaleus crossleyi) sitting on branch at night. Ranomafana National Park, Madagascar.

Nick Garbutt / Greater dwarf lemur (Cheirogaleus major) in rainforest canopy at night. Masoala National Park, Madagascar.

Nick Garbutt / Amber mountain fork-marked lemur (Phaner electromontisi). Daraina forest, northern Madagascar.

Nick Garbutt / Golden-brown mouse lemur (Microcebus ravelobensis) active at night. Ankarafantsika National Park (Ampijoroa), north west Madagascar.

Nick Garbutt / Madame Berthe's mouse lemur (Microcebus berthae) at night. Kirindy forest, western Madagascar. (world's smallest primate)

Nick Garbutt / Grey-brown mouse lemur (Microcebus griseorufus). Ifaty spiny forest, south western Madagascar.

Nick Garbutt / Goodman's mouse lemur (Microcebus lehilahytsara) at night. Andasibe-Mantadia National Park, east 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...

Nick Garbutt / Madame Berthe's mouse lemur (Microcebus berthae) at night. Kirindy forest, western Madagascar. (world's smallest primate)

Nick Garbutt / Fat-tailed dwarf lemur (Cheirogaleus medius). Kirindy forests, west Madagascar.

Nick Garbutt / Ankarana dwarf lemur (Cheirogaleus shethi) in forest understory. Ankarana Reserve forests, northern Madagascar.

Nick Garbutt / Adult brown or rufus mouse lemur (Microcebus rufus) at night. Ranomafana National Park, south east Madagascar.

Nick Garbutt / Adult Groves' dwarf demur (Cheirogaleus major) in rainforest at night. Ranomafana National Park, South East Madagascar.

Nick Garbutt / Ankarana dwarf lemur (Cheirogaleus shethi) in forest understory. Ankarana Reserve forests, northern Madagascar.