Many animals can regrow their teeth, but perhaps the most well-known are sharks. Sharks have a unique ability to continuously replace their teeth throughout their lives.
Sharks have rows of teeth that move forward as the older teeth wear down or are lost. This process is called polyphyodonty, meaning "many teeth."
The teeth at the back of the jaw are constantly growing and moving forward, replacing the ones at the front that are used for biting and tearing prey.
Sharks can lose hundreds of teeth in their lifetime, but they don't have to worry about being toothless because new teeth are always ready to take their place.
Other animals that can regrow their teeth include rodents, elephants, and reptiles.
Rodents have continuously growing incisors that need to be worn down by gnawing on hard objects.
Elephants have large, flat molars that wear down over time, but they are replaced by new ones throughout their lives.
Reptiles, like crocodiles and alligators, also have teeth that are constantly replaced.
