There is no doubt that many people view their dogs as family members. In fact many of my clients often use the term "four-legged children" when describing their pets. A recent journal article in Science demonstrated that both people and their dogs experience an increase in the natural bonding hormone oxytocin after a period of interaction. Some researchers theorize the familiar canine characteristics of large eyes, playfulness, and retention of other juvenile traits promote a relationship similar to that of a parent and child. Although the interaction is often very strong and relatively peaceful, just like any other relationship, there can be periods of conflict.