Scientists have found saber-toothed monsters in the Russian Permian fossil record of mammals.
One was about the size of a wolf with long, blade-like teeth — the dominant predator of its time. The other was a smaller carnivore with a long snout, big eyes and needle-like teeth.
They roamed what is now modern-day Russia between 299 and 252 million years ago during what’s known as the Permian Period.
