Our dog park has closed down, but I had a problem with two boys there when I used to go. A woman had a 3 and 7 year old set of terrors. I hated going to the park when they were there. Especially because they always insisted on playing with my son and I didn't want people to associate my son with them. A dog park isn't a place for a kid unless they understand the rules. I think it is very irresponsible of the parents to assume that every dog loves to be harrassed and annoyed by children. And watch, if that kid finally gets bit, the parents will blame it on the dog's owners, not their own child.