Meet Tom Thumb of Scotland. At four inches from tail to nose, weighing three ounces, and at three weeks old, he is officially the tiniest dog on the planet. He was the runtiest of the litter, but from the looks of his expression in that teacup, he knows he's the man. He's all, "That's right bizatches! I may be little, but notice I am the one everyone's paying attention to. Peace out!"