Primates featured quite highly on my wanted list (and very highly on Belinda's!) and we were lucky enough to see several species - Orangutan, Proboscis Monkey, Maroon Langur, Silvered Langur, Long-tailed Macaque, Pig-tailed Macaque, Slow Loris and Colugo (aka Flying Lemur). Orangutans were caught up with at Gomantong Cave and Kinabatangan River with the latter site having plenty of Proboscis Monkeys. We also saw just 1 at Klias River. Maroon Langurs were at both Danum Valley and Gomantong Caves. Long-tailed Macaque were common along most waterways but we only saw Pig-tailed at Sepilok Rainforest Discovery Centre. On a memorable night walk there we had Colugo and Slow Loris plus Red Giant Flying Squirrel
While on the subject of mammals in general we had good views of 4 Asian Pygmy Elephants from our minibus along the entrance track to Danum Valley on the way in. On the way out several days later along the same track we had what can only be described as one of the biggest strokes of luck ever - a Sumatran Rhino ran across the track in front of the vehicle before quickly disappearing into roadside vegetation! Although we were buzzing at the time we didn't quite realise the significance of the record. I knew there were very rare but apparantly they were declared extinct in Sabah a few years ago. Since our record scientists have found footprint tracks of the species in a remote area of Danum Valley proving that declaring them exinct was a bit premature. Still as rare as rocking horse shit though!
Colugo (Flying Lemur)