Nick Garbutt / Bornean pygmy squirrel (Exilisciurus exilis) on tree trunk. Kinabatangan River, Sabah, Borneo, Malaysia.

Chien Lee / Tufted Pygmy Squirrel (Exilisciurus whiteheadi) climbing, Sabah, Borneo, Malaysia

Chien Lee / Tufted Pygmy Squirrel (Exilisciurus whiteheadi) carrying nesting material, Mount Kinabalu National Park, Sabah, Borneo, Malaysia

Nick Garbutt / Bornean pygmy squirrel (Exilisciurus exilis) on tree trunk with human hand for actual size comparision. Kinabatangan River, Sabah, Borneo. (composite image)