It’s clear, we love our dogs. Nearly half of U.S. households have one, and many owners see pets as part of the family — 51 percent say pets belong “as much as a human member.” Pet ownership keeps ...

Imagine Max, a well-trained border collie, manages to ignore a squirrel in the park when his owner tells him to sit. His owner says, “Max, stop chasing that squirrel and sit down,” and Max obeys. Can ...