Cats in the United States the appearance of humans in the Americas. Some prehistoric animals referred to as "saber-toothed cats" were in fact marsupials and not cats at all, but called such because of their resemblance to true felines with large canine teeth. Two main species of big cat currently inhabit the United States. One is the jaguar ("Panthera onca"), which is related to many species of big cat found on other continents and can be found in the southwestern US and as far south as northern Argentina. The other, the cougar ("Puma concolor"), which is also known as the puma or mountain lion, is
Sylvester the Cat Bunny Birthday Blowout", "Bugs Bunny Rabbit Rampage", "", "The Bugs Bunny Crazy Castle 2", "", "", and "". The name "Sylvester" is a play on "Felis silvestris", the scientific name for the wild cat species (domestic cats like Sylvester, though, are actually "Felis catus"). Sylvester was not named until Chuck Jones gave him the name Sylvester, which was first used in "Scaredy Cat". Although the character was named Sylvester in later cartoon shorts (beginning with 1948's "Scaredy Cat"), he was called "Thomas" in his first appearance with Tweety Bird in "Tweetie Pie", most likely as a reference to a male