Nature Season 27, Episode 8

Why We Love Cats and Dogs · PBS · Sunday, February 15

Some people are cat people, some are dog people. But regardless of which camp they fall into, most people are simply crazy about their pets. The connections people form with their cats and dogs are often the longest, strongest relationships in their lives. They are our soul mates, our best friends, sometimes even our surrogate children. What makes these creatures such key members of our families?