Sundan Slow Loris are small, generally slow moving primates. Oh, and they're venomous!
There are many species of Loris ranging across Asia but they all have a gland that produces venom.
They lick that gland under their arm to produce the toxic result for defense.
These are almost entirely nocturnal but easy to find because their eyes are very reflective to flashlights.

Deramarkot Reserve, Sabah - Malaysia
March 2019