Monkeys & Apes
Monkeys and apes are actually our closest relatives in the animal kingdom - we're all primates!
Monkeys and apes are often confused - but there's a simple way to tell them apart. Usually monkeys are smaller than apes and have tails. That's not an exact rule though - some monkeys don't have a tail. And some apes, like gibbons, can be smaller than monkeys! You can see why it's confusing.
Monkeys are more likely to be arboreal (living in trees) than apes. They're remarkably agile and use their tails as a fifth limb. They can't swing between branches using their arms however, something apes do expertly.