Recent research has shown that orangutans have a culture of their own. This means they pass on knowledge to the next generation. In some parts of Borneo, orangutans will use leaves as napkins. Another group in Sumatra uses leaves as gloves to handle spiky fruits. Orangutans are capable of creating and using easy forms of tools which demonstrates that their cognitive abilities are much higher than those of other great ape species. Orangutans use leaves to build a shelter from rain and will use sticks and branches when they forage for insects or collect honey to avoid being stung. Some orangutans have even been observed using tools to extract seeds from hard-shelled fruits.