Humans and dogs have been living together side by side for thousands of years, so you would think we know everything about ...

Just about everybody knows that dogs are blessed with a superior sense of smell. As a matter of fact, their sense of smell is so sophisticated that humans, in comparison, are olfactory illiterates.

Dogs seem to be everywhere—in cafés, in our neighborhoods, and, of course, in our homes. Their heads seem to be hanging out of car windows in every passing car. Our own 6-year-old boxer, Jack, a ...