Painted cats, or rather photographs of "artistically" painted cats, are making the rounds of the Internet, inspired by a coffee table book that went on sale around Christmas. The book has its own entry at Wikipedia, reminding everyone that it's a parody and isn't real.
examples at the gadny.com blog
An animal painting exercise that is real was done by a colleague at my last employer, Wake Forest University's Art Department. Martine Sherrill, the curator of the visual resources collection, would actually paint her horses for Halloween.
Skylark at Martine's website