[Raja's Mom]

Removing the bone from the situation would be a good idea as some dogs will even attack their owners over a bone... too touchy for playtime.

If the cocker is getting jealous and snapping, your friend needs to be responsible and address that.

Also, a very good trainer told me having dogs greet and play on leashes is never a good thing. It makes them tense, nervous, and protective. I know at first it seems silly because you can pull them away on a leash, but it makes them feel stuck, kind of backed into a corner, so they are more likely to be aggressive.

I would sit on the floor with them and when the cocker spaniel got too rough & bitey it would get a tap on the bum!