For all dog lovers, a stunningly illustrated and scientifically informed global guide to our beloved canine companions and their wild kin. Dogs are spectacularly diverse. From the world's smallest wild canid, the diminutive fennec fox, to the majestic grey wolf, and from the towering great Dane to the tiny Chihuahua, The Book of Dogs celebrates the connections between humans' best friends, their ancestors, and their wild cousins, offering insights into both wild and domestic canines and profiling every related species in the dog family Canidae as well as the vast variety of domestic dog breeds. No other book so comprehensively and globally covers the most widespread family of carnivore species, helping to show that humans' companions are part of a much larger animal world. Leading canid expert and award-winning author David W. Macdonald accessibly explains developments in the study of genetics to reveal the ancestry of modern canids and the astonishing hybridization among them. In addition to showcasing the diversity of our planet's dogs, the book presents the latest research on the ecology, behavior, and society of wild dog species. These compelling descriptions with beautiful photographs--including life-size snout images of each of the thirty-seven wild canid species and over two hundred global breeds--offer readers of The Book of Dogs a chance to meet and understand our companions and their kin like never before.