The American cougar is now re-populating parts of the US, scientists say.
Their numbers had plummeted in the last 100 years because of hunting and a lack of prey.
Now researchers have published the first scientific evidence that cougars have returned to the mid-west and are now to be found as far south as Texas and as far north as the Canadian provinces of Ontario and Manitoba.
Read more on the BBC
Cougar (slang) on Wikipedia
