Why don't parasitic animals have teeth?

One thing that you should know about parasites is that they will always rely on other animals so that they can get their food. They do not need to have teeth anymore because everything that they will eat has already been digested. Take note that parasites may come in different forms. They will also be able to thrive in different living conditions.

For example, a tapeworm is a type of parasite that will be living inside the body of an animal or a human. There are even some that would lay their eggs there. Lice can live outside the body of humans. They are normally found on the scalp but they would still need a host in order to survive.