In a study of 50 dog owners and 50 people who don't own dogs, test subjects interact with dogs they own, dogs belonging to others, and a robot dog manufactured by Sony. Researchers take blood pressure readings and blood samples from the people and the dogs. Preliminary findings show the best results from interaction between people and the dogs they own. Both the dogs and humans have experienced lower blood pressure, better levels of good hormones and decreased levels of hormones related to stress.
