Paleontologists have identified a new species of a saber-toothed predator cat. It’s believed to have roamed North America between 5 and 9 million years ago and weighed more than 1,000 lbs.br » Sign up for our newsletter KnowThis to get the biggest stories of the day delivered straight to your inbox: » Subscribe to NowThis: br For more science news, subscribe to NowThis News.