Several studies have been conducted to determine the relationship between dog ownership and physical activity. Overall, approximately 60 percent of dog owners walk their dog an average of 160 minutes per week, with four walks per week. By that benchmark alone, dog owners engage in more walking than non-dog owners. Further, one study found that pet owners who walk their dogs got up to 30 minutes more exercise a day than nonwalkers. Even cats and other playful house pets can offer opportunities for expending energy.