Bub the "perma-kitten" - a cat with a genetic disorder that will keep her kitten-sized with kitten-esque features its entire life - is on the verge 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., of his truly one-of-a-kind cat. Bub's dwarfism keeps her limbs are disproportionately small relative to the rest of her body, thus her short, stubby legs ...