[myboy]

Ok, I have stupid question.
Cozmo will only play with one toy. And that is a soft ball that was Deiter's, Well they will both play with it, then Deiter takes it from Cozmo and runs, hides, runs around so Cozmo won't get it. Well Cozmo gets so upset then he finally gets it. Then Deiter will fight for it. Sometimes it seems like play, but then other times it isn't. Dieter will bite his ear so Cozmo will drop it.
1. How do I correct
2. If I put it up then Cozmo won't play with anything else.
3. When Dieter bites the ear and makes Cozmo bark of pain. I put Deiter on his back and put Cozmo over him that way neither one over dominates the other. Is that right to do that???????????????? That is what I was told I needed to do.
4. How can I get Cozmo to play with other toys?

Please help I want to do right but I don't know how or what to do about this.