Anna, I am so glad you posted this as I am curious to hear the answer! Duncan cannot drink water at the dog park because if another dog comes over, either to the community fountain or to someone else's water bowl that Duncan has commandeered, he will growl at the other dog, snap and them and has on occassion attacked them. I usually have to stand by the water dish and pull him away when other dogs come over.
He loves to play with other dogs as long as they are not submissive. If they are timid he will jump on them, hold them down and growl at them. He doesn't bite them, just growls and barks. It's very upsetting and I don't know why he does it. He does the play posture to almost every dog and if they want to play, he plays! If they snarl at him or are submissive to him, he attacks. ???
So thanks again for the thread!
PS I'm sorry Bon did this and upset you. I know the feeling and it sucks!