I know what you mean by the growling, snarling...etc, it's all playfull sounds, thats not being agressive(sp?) at all!

It sounds like that lady's dog was not socialized well, and I dont see why she brings her dog there if it wont get along with other dogs, isnt that the point...? Maybe she does it for kicks, I mean the way she's lied about how her dog seems to pick fights, and attack for no reason, maybe thats why she brings it there, some people are like that, like the guy around here that makes his rotties vicious and then lets them loose...

She is probably going to get in trouble, her dog will probably end up biting someone or seriously hurting another dog....