What are dogs really trying to tell us? Is that smile a sign of happiness or nervousness? Is she yawning because she'stired or stressed? Such quizzical gestures and other canine conundrums are explained in this smart photographic primer. A pup's ears, eyes, head, mouth and teeth, back and legs, and tail all work in concert to convey his mood. This handy guide lays out the canine body-language alphabet, letter by letter, then neatly illustrates the...