Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

Teeth and the evolution of teeth have long fascinated researchers in all manner of species. Questions arise, such as why they evolved, why they were lost, and even in some cases, why they evolved ...

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The spotted ratfish is a two-foot-long fish with a big head and a long, skinny tail that lives in the northeastern Pacific Ocean. It belongs to a group of fish called chimaeras that are closely ...

Add Yahoo as a preferred source to see more of our stories on Google. Let's talk about (ratfish) sex, baby. After analyzing the tissue, researchers discovered these are actual mouth teeth growing out ...

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