http://en.wikipedia.org/wiki/Cougar

雖然叫美洲獅....但只是同是貓科.... 只有獅虎豹比牠重....所以只能說牠比獅小...但比貓大...

It is the second heaviest cat in the American continents after the jaguar, and the fourth heaviest in the world, after the tiger, lion, and jaguar. Although large, the cougar is most closely related to smaller felines