But shark teeth come in many shapes and sizes. They can tell us how these fish live and evolved ... And because they’re eating different foods, they need different types of teeth.’ Serrated teeth have ...

The Bull Shark is a powerful predator that's known for its aggressive behaviour. This adaptable species of shark can live in ...

Plus, a paper cut is not a clean cut. If you look at the edge of paper under a microscope you'll see it's jagged, sort of like shark teeth. This leads to messier, more painful wounds. Lastly ...