He's wagging his tail, fetching the Frisbee, and eager to get petted--in short, Fido's living up to his title as "man's best friend." But the domesticated dog's got a special secret: in many ways, he's really a lot like a wolf. Using amazing close-up images she shot inside a real wolf lair, as well as museum-quality historical pictures and illustrations, award-winning author and photographer Jenni Bidner compares the pet pup with his wild ancestor...