The only great apes that live outside of Africa are orangutans, of which there are two species. The Sumatran orangutan is more endangered than the Bornean orangutan. The two differ in appearance and behavior, with Sumatran orangutans being slightly smaller and usually having hair that is lighter colored and orange-red, as well as a longer beard. Sumatran orangutans lead very solitary lives, during the day moving slowly in search of food through the trees. Up to 60% of an orangutan’s time is spent foraging and eating, and, although they can occupy large home ranges, half a mile a day is the most they usually travel. At night, they build a nest for sleeping up high in the canopy out of folded branches. They are not very territorial, sharing their home ranges with others, sometimes feeding alongside other orangutans around especially abundant fruit trees.
Orangutans are known to watch villagers cross the local waterways in boats and then unfasten a boat themselves and ride across the river.
Orangutans are the slowest breeders of all land mammals, reproducing every seven or eight years only.
Orangutans have 32 teeth, the same as humans.
Mosquitoes are pests for orangutans as they are for humans, and orangutans use branches to swish them away.