Mammal watching along the Kinabatangan River in Sabah offers one of the best wildlife experiences in Southeast Asia, thanks to its remarkable concentration of species within a relatively small area. The river meanders through a mosaic of lowland rainforest, oxbow lakes, and mangroves, creating vital corridors for wildlife. This area is particularly famous for sightings of Bornean pygmy elephants, often seen bathing or foraging along the riverbanks, and large troops of proboscis monkeys, which are endemic to Borneo and easily spotted in the trees at dusk. Orangutans, silvered langurs, and long-tailed macaques are also regularly observed, while night cruises may reveal the rare and elusive flat headed cat and equally as rare otter civet. With patient river cruises and knowledgeable guides, the Kinabatangan offers exceptional opportunities to observe Borneo’s mammals in the wild, often from the comfort of a small boat.