Includes bibliographical references (p. 62).

Do dogs come from dinosaurs? -- Why do dogs like people? -- What can a dog tell by smelling a person, and what can a person tell by smelling a dog? -- Can dogs recognize other people in your family by their smell? -- How do dogs drink with their noses in the water? -- Why do some dogs' ears stick up while others flop down? -- Dog food looks and smells pretty gross, so why do dogs like it? Can people eat dog food? -- Are there any diseases people can get from dogs or dogs can get from people? -- How many hours a day is a dog supposed to sleep? -- When sleeping dogs twitch and make noises, are they dreaming? -- Do dogs ever fall in love? -- Do dogs cry? -- How come my dog never seems to watch TV with me? Can dogs see what people see? -- Did anyone ever "invent" his or her own breed of dog? -- Have any dog breeds ever become extinct? -- What's a dog's tail for? When it wags, does that mean the dog is happy? -- Why do dogs sniff under each other's tails? -- Do dogs have baby teeth that fall out before they get their adult teeth? -- Why aren't dogs supposed to eat chocolate? -- When a dog stares at you, what is he thinking? -- What color is a dog's skin underneath all that fur? -- Can dogs remember stuff? How long are their memories? -- How many toes does a dog have? -- Are the pads on a dog's foot part of his toes? -- Why do dogs seem so happy to see us, even if they've just seen us? -- Why do dogs have cold, wet noses? -- Cats have whiskers, Do dogs? -- Why do dogs lick us? Do they wish we'd lick them back? -- Why do some dogs like riding in cars and other dogs don't? -- How many breeds of dogs are there in the world? -- Who was the most famous dog ever? -- But really, why do dogs like people?

Uses a question-and-answer format to present a variety of information about dogs.