Tony Heald / Malayan colugo (Cynocephalus variegatus) hanging upside-down in tree feeding on algae at night, Danum Valley, Sabah, Borneo, September

Chien Lee / Sunda flying lemur (Galeopterus variegatus) mother with young, Bako National Park, Sarawak, Borneo, Malaysia

Chien Lee / Sunda flying lemur (Galeopterus variegatus) mother with young, Bako National Park, Sarawak, Borneo, Malaysia

Nick Garbutt / Sunda flying lemur (Cynocephalus variegatus) red colour morph, in daytime resting posture. Danum Valley, Sabah, Borneo.

Chien Lee / Sunda flying lemur (Galeopterus variegatus) female, Malaysia

Chien Lee / Sunda flying lemur (Galeopterus variegatus) mother with young, Malaysia

Anup Shah / Colugo or 'Flying Lemur' female and baby clinging to a tree (Cynocephalus variegatus). Bako National Park, Sarawak, Borneo, Malaysia.

Anup Shah / Malayan flying lemur (Cynocephalus variegatus) mother and baby clinging to tree, Bako National Park, Sarawak, Borneo, Malaysia

Chien Lee / Malayan flying lemur (Cynocephalus variegatus), Bako National Park, Malaysia

Suzi Eszterhas / Malayan flying lemur (Cynocephalus variegatus) at night, Danum Valley Conservation Area, Malaysia

Suzi Eszterhas / Sunda flying lemur (Galeopterus variegatus) on tree trunk, northern Sumatra, Indonesia

Suzi Eszterhas / Sunda flying lemur (Galeopterus variegatus) camouflaged on tree trunk, northern Sumatra, Indonesia