For the same reason as humans. Teeth are essential for the mastication (chewing) stage of digestion. Teeth can also be used as a defence mechanism for many animals.
They are called a rodent.
The teeth in animals grow by eruption - the tooth is fully formed in the jaw and over the animal's life it is slowly forced out of the jaw where it is visible above the gum line. This is why very old animals may be missing some or all of their teeth - the entire tooth has been used and has fallen out of the socket.
because they need them to grind up their food before swallowing !
Your teeth can grow up to 55cm.
Whales have bristles, not teeth. So no their teeth do not grow back.
No, an adult squirrel's top teeth will not grow back if they are lost or damaged. Unlike some animals that continuously grow their teeth, squirrels have a set of permanent teeth that only wear down through use. If a squirrel loses a tooth or it becomes severely worn, it may face difficulties in feeding and grooming, which can impact its overall health.
Harp seals have teeth that will grow if they eat pup. They are very sharp teeth which are also powerful and are used as a form of protection.
it helps their body grow and strengthens bones and teeth
You are born with teeth, but they must grow in first.
teeth grow about every 3 mouths
Rodents, such as mice, rats, squirrels, and beavers, have teeth that never stop growing. This continuous growth helps them maintain sharp teeth throughout their lives, as constant gnawing and chewing wear down their teeth.
Yes because even when you have baby teeth your grown up teeth are in the back getting ready to grow