Cats love playing with balls of string and yarn. And, apparently, according to this cute, clever, colorful Xmas card, they love balling up strings of Christmas lights, too. That's what the adorably naughty, blue eyed, white, brown and black Siamese feline is pictured doing on this charming kitty card. All the bright reds and greens, and red and white Santa hat, of the festive holiday season are here on display, along with a funny helping of Yuletide pussy mischievousness. Watch out for the Christmas tree!