A great white shark is a masterwork of evolutionary engineering. These beautiful predators glide effortlessly through the ...

As if the ocean’s apex predator wasn’t terrifying enough. Hollywood films like Jaws taught us all to be fearful of the giant ...

Whales are mighty. Blue whales, for example, aren’t only the largest animal on Earth, but as far as we know, they’re the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The sensitive ...

Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to sink into their prey, while herbivores tend to have flatter teeth to grind down their plant-based meals. Some ...

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 first evolved as sensory organs, not for chewing, according to a new analysis of animal fossils. The first tooth-like structures seem to have been sensitive nodules on the skin of early fish ...

While arthropods have retained their sensilla, odontodes appear to be the direct precursors to teeth in animals. As the researchers compared sensilla and odontodes, they also arrived at another ...