People who own pets have been known to lead longer and happier lives than those without them. As we get older, we become less active. The more inactive we become, the higher our risk of death. We therefore need something in our lives to keep us busy so we don’t die prematurely; and a pet is just the thing to do it. This is probably because of the companionship, exercise, and responsibility that they provide.
    
First, owning a pet forces one to take on the responsibility of keeping it alive. One’s pet must be fed, watered, and kept healthy. Doing this requires us to move about. Whether one walks across the house or merely to the birdcage in the corner, said someone is moving. This small bit of motion will at least prevent muscular atrophy. Many pets will also require a walk to be happy and healthy. This gives one a steady cardiovascular workout.