Some sharks grow new teeth as they need them, with some species growing up to 20,000 teeth in their lifetime!
A snail can have about 25,000 teeth and they are all on its tongue.
Wisdom teeth are so called because by the time they appear you are usually a grown-up and supposedly wise.
Teeth are almost as hard as rocks, with your tooth enamel being the hardest part of the human body!
Plant eaters like horses and cows don't need canine teeth. Some whales have no teeth at all!
Incisors are at the front of your mouth. They have flat, sharp edges because they have to cut into the food as you bite it.
Premolars and molars are at the sides and back of your mouth. They grind food to make it easier to swallow.
