Sabre teeth were last seen in Smilodon, often called sabre-toothed tigers, which existed until about 10,000 years ago. To investigate why these teeth kept re-evolving, Tahlia Pollock at the ...

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 ...