Orang-utans are highly intelligent apes who can recognise their own reflection.

Orang-utans are highly intelligent apes who can recognise their own reflection. They can also use tools. For example, they might stick a long branch vertically into a lake to find out how deep it is, or use it to make a bridge over marshy ground before they cross.

Fun fact
When it rains, orang-utans hold leaves over their heads to prevent them from getting wet.