Uber Cats are the Hybrid cats mixed breeds.

Currently available there are 12;

You can tell a Uber Cat not only by its unusual markings but by its Level instead of a number it says Uber Cat. This however does not mean that there is not a level assigned to the cat it just means we have to do a bit of math to figure it out.  The resulting number is the level that we then use when the Uber Cat goes to make babies.

Moms Level + Dads Level /2 +1 = Uber Cats Level.