Nope, not agressive at all, very submissive matter of fact. Our first trip to the dogpark, she rolled on her back and piddled on herself. All the dogs smelled her and all was good. She is such a happy girl. It doesn't matter where really, but an enclosed park would probably be a good place to start and if we all decided to go to the beach later, then cool.We have never had her out in the open not on a leash, so it's hard to imagine how she'll act, but by the way she is always under foot, it's hard to belive she'll run.