What do you consider a dog playing between a dog being aggressive.
Backstory: I have taken my dog to a dog park near my home a few times... Usually the owners are pretty chill and let the dogs play around. If things start to get a little out of hand, the owners usually step in and take control of the situation. The 5th time i took my dog there, an owner brought 3 dogs to the park with him. First off, he takes his dogs to the corner and plays with them only. After a few minutes his dogs go running off and start playing with other dogs, mine included. Another few mintues go by, and he has herded his 3 dogs onto a table in the other side of the park. I noticed someone else dog go up to the table and his dog started going ape shit and snapping at the one dog... I didn't say anything about... Anyways, 10 minutes later all the dogs are running around playing and stuff... One of his dogs lays down on his back and 3 dogs are over him/her pawing, barking, etc... including my dog... Well, my dog is doing a playful gnawing (looks like playful, its not a full on bite) at his dogs ear/neck area, i noticed my dog doing it so i step in and pull my dog off... As i'm getting my dog, he starts bitching at me about how my dog is biting his and that my dog is too aggressive. I mutter something back to him and to avoid further confrontation, i just remove my dog and we leave.
Now, my question. Is my dog just playing, or is she being aggressive?