Could this be the world's happiest cat?

In the Internet world where cat videos are all the fancy, Bub the "perma-kitten" could be on the edge of viral stardom.

"She's the best living thing on the planet," says Bub's owner, Bub (yes, the same name) Bridavsky of Bloomington, Ind., who says a rare genetic disorder has produced a one-of-a-kind cat.

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