Human: Why did the Saber-toothed cat go extinct? Assistant: 
The Saber-toothed cat went extinct because it was hunted to extinction by humans. The cat was a big cat that was about the size of a lion, but it had sharp teeth and a very long, thin, saber-like tooth. It lived in North America and Asia during the Pleistocene era, and it went extinct around 10,000 years ago.