The heavier males usually sleep on the ground. Unlike other Apes, Orangs may also weave a roof over their beds. When it rains or is too hot, they may also hold leafy branches over their heads, or drape large leaves around their head and neck. They make a new nest in a different location every night. Sometimes, they build smaller nests in the daytime too.
Orangs show a remarkable ability to arrive at certain trees just as their fruit is ripening.
Like other Great Apes, Orangs have been observed to use tools, but less extensively than has been observed for chimpanzees. Orangs use sticks for digging, winkling out edible seeds from a spiny fruit case, or use a stick to hit a snake. They may also use sticks to fight each other or scratch themselves. This behaviour appears to occur more often when Orangs are found in closer proximity, such as in zoos. In the wild, tool use has been observed in Gunung Leuser National Park in Sumatra.