Crocs are known as “polyphyodonts” meaning that they’ll have several sets of teeth in their lifetime. They are able to replace each of their 80 teeth up to 50 times.
Some crocodiles live in saltwater and have specialized salt glands that help to filter out salt.
Mother crocodiles are fierce protectors of their nest, but once the babies hatch, they’re on their own (unlike alligators, which often care for their young).
You can distinguish a crocodile from an alligator by looking at the teeth when the mouth is closed. A crocodile’s fourth tooth is always exposed.