We decided that we too will stick clear of dog parks. Not only are other dogs unpredictable but most owners think that a dog park means you don't have to pick up after them. After one incident where Ricky ended up with another dog's mess all over him, I was over it. I think that is just asking for health problems.
One other thing was this guy with the aggressive dog kept coming over to where we were standing and his dog was doing that whole drooling thing which I know they can't help but he kept shaking his head and Ricky almost drowned in it. What a mess.