Dogs can directly influence the mood changes that a human can experience throughout their day. The influence that a dog can have on a human’s mood can directly affect their heart rate, as well as other aspects of life. Having an imbalance of mood stability could be a direct indication of the level of stress within somebody’s life. With the increase of stress within someone’s life, that could directly influence his or her heart rate. The sympathetic nervous system is responsible for the fight or flight method that is linked to the rate at which someone’s heartbeats. The fight or flight method can be induced by stress and can determine the rate at which the body reacts to the fight or flight method is through two primary responses (Carlson,
