My dog’s favorite game was to have me grab his tail. He would immediately spin around and grab my wrist, and then he would bite harder and harder until I let go. As soon as I let go of his tail, he would let go of my wrist. I don’t bruise easily so I was fine, but other people who tried it got bruises.
I have no idea what he got out of that game. People thought I was being mean to him, but if I held my hand out then he would walk backwards to put his tail in my hand.
And here I am stuck babysitting an inferior human baby.