I wouldn't do it at the dog park, but I've played tug with Max since he came home, I think. He did that puppy growl thing, too, cracked me up - and I thought I was the only one who growled back! The dog park here doesn't allow toys, or treats, but some people bring them anyway.

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I have the total opposite problem. Rose would never go for another dogs toy and would even give her toy away. She is just too nice. She runs along side and plays but she is too much of a lady. We do not play tug a war since we are training her in the field.