With long, thin blades protruding from their mouths, saber-toothed cats roamed the Earth during the last ice age, alongside woolly mammoths, giant ground sloths and mastodons. They lived from the ...

Vegetarian dinosaur may have actually eaten meat, skull suggests. Steak knife-like teeth in the most complete Pachycephalosaurus jaw ever found look suspiciously like those of a carnivore.

Modern human milk teeth typically emerge later, between around 7 and 10 months of age. The single Neanderthal baby tooth provided additional information that also pointed towards early eruption.