Some animals have unique features though. Rabbits usually lose their baby teeth before birth and are born with their adult teeth. Rabbits, some rodents, squirrels and beavers have teeth that are always growing. This is important to keep their teeth from wearing down from all the bark and tough foods they chew on. A squirrel whose teeth wore down would not live for very long!
Venomous snakes have teeth called fangs, and they deliver poison in two different ways. Some snakes, like the rattlesnake, have fangs that are hollow, and inject the poison through their hollow fang. However, most venomous snakes do not have a hollow fang.
Instead a groove on the surface of the fang allows the poison to flow down the tooth into their victim. This creature has over 14, teeth! Snails have a band of thousands of microscopic teeth on their tongue. They do not use these teeth to chew though. Instead, the teeth slice off the food then shred it as it passes through the tongue. When their teeth get dull, they fall out and regrow.
Another type of snail, the limpet , has teeth that are even stronger than spider silk. Their teeth are now considered to be the strongest natural material in the world! Many types of animals, like sharks, crocodiles and snails, regrow teeth as they fall out. Other animals have teeth that regrow as they wear down.
Dog saliva has a very high pH, which prevents enamel from demineralizing, and sharks have fluoride on the surface of their teeth that helps prevent cavities. Their food is eaten raw and they eat many more rough and fibrous things like bone, tree bark and plants, which helps to clean their teeth. Additionally, wild animals only drink water, not sugary drinks that eat away at teeth. All these animals and many more have amazing teeth. Of all snail varieties, limpets—a small type of sea snail—may be the most dentally gifted: Their teeth are made from protein reinforced by fine mineral nanofibers called goethite, and according to one study, they're even stronger than spider silk, potentially making them the toughest biological material on Earth.
One source of comfort here is that snail teeth are also tiny: A single limpet tooth is slimmer than a human hair. That means a vicious snail on the loose likely can't do you much harm—unless maybe you're a piece of grass.
BY Michele Debczak. A Microscopic Look at Snail Jaws Have you ever wondered what the inside of a snail's mouth looks like? By: Jann Vendetti, Ph. Share: Share page on facebook Tweet this page. Brazilian Snail eating lettuce.
Underside of Cornu aspersum showing the single reddish-brown jaw of the mouth. Close up of the open mouth of Cornu aspersum showing the jaw and the pale-colored ribbon of teeth called the radula. Limacus sp.
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