Nick Garbutt / Masoala woolly lemur (Avahi mooreorum) sitting in tree, Masoala National Park, north east Madagascar. Endangered.

Nick Garbutt / Western woolly lemur (Avahi occidentalis) resting on branch. Ankarafantsika National Park, north west Madagascar.

Nick Garbutt / Small group of Peyrieras's woolly lemurs (Avahi peyrierasi) huddling on tree branch, Ranomafana National Park, south east Madagascar.

Nick Garbutt / Eastern woolly lemur (Avahi laniger) juvenile, resting on tree trunk, Mantadia National Park, central east Madagascar.

Roland Seitre / Eastern woolly lemur (Avahi laniger) resting in a tree at night, Analamazaotra Reserve, Madagascar.

Roland Seitre / Eastern woolly lemur (Avahi laniger) sitting in a tree at night, Analamazaotra Reserve, Madagascar.