"Cats" is as the name suggests a cat like race. They came to earth for tens of thousands years ago from space with a few damaged space ships escaping from their now more unknown enemy that had invaded their home planet. They look like cats, but on the inside for example they have two hearts, a much more advanced brain than humans, almost twice the amount of muscels, but they also have delicant kidneys wich makes them very addictive to water. After so many years with normal cats their intelligence has "cooled" down a bit, but in the same time normal cats has adapted "Cat"s knowledge.