If you’re cruising along the Kinabatangan River, chances are you will come across the long-tailed macaques. Also known as crab-eating macaques, these charismatic furry creatures are one of the most common primate species in Southeast Asia and can be found from primary forests to mangroves to the outskirts of towns and villages. In fact, they have been added to the list of “100 of the World’s Worst Invasive Alien Species” as they are a threat to biodiversity in several locations, including Hong Kong and western New Guinea. They can be quite temperamental and curious so best to keep your eyes open for them!