I came across this. Its an interesting angle I had never thought about. But once I read it it, it I could recognize this in my house.
Do dogs view humans as members of the pack? Part 1: PLAY - Mary Huntsberry ~ Dog, Cat, and Animal Behaviorist in Gaithersburg, Maryland
More Differences Between Dog-Dog vs. Dog-Human Play - Mary Huntsberry ~ Dog, Cat, and Animal Behaviorist in Gaithersburg, Maryland
Do dogs view humans as members of the pack? Part 1: PLAY - Mary Huntsberry ~ Dog, Cat, and Animal Behaviorist in Gaithersburg, Maryland
More Differences Between Dog-Dog vs. Dog-Human Play - Mary Huntsberry ~ Dog, Cat, and Animal Behaviorist in Gaithersburg, Maryland