What has needle-like teeth so large they don’t fit inside its mouth, a huge gaping jaw that completely engulfs its prey, and lives in the ocean zone where sunlight can’t reach? That would be the ...

Not all creepy things go bump in the night -- some of them swim. While you might think of fish as harmless little dudes hanging out in your aquarium, there are some ...

Scientists found a predator with “sharp” teeth and white eyes in a river of Bolivia and discovered a new species, a study said. Photo from Getty / iStockphoto In a river of northern Bolivia, a silvery ...

Saber teeth — the large canines — are pretty fearsome. These fangs have evolved at least five times in predators that are now extinct, but there's been something of a mystery as to why. Sometimes we ...

Saber-toothed predators—best known from the infamous Smilodon—evolved multiple times across different mammal groups. A study titled "Functional optimality underpins the repeated evolution of the ...

In the history of teeth, perhaps no tooth is as famous as the saber tooth. These long, blade-like canines seem almost perfectly optimized to kill prey. They've evolved at least five times in mammals, ...