I am glad someone mentioned the switching large/small dog sides. I have a big problem with that, too. Both ways. The large dog side of our dog park has huge puddles that the dogs love to play in (the water just lays there for days after a rain). So for three days after a significant rain, you can be sure big dog people will be bringing their dogs into the small dog side, because they do not want their dogs wading (and in some cases purposely lying and rolling around in) the puddles. I am not unsympathetic to their problem, and I understand the large dogs have the right to run and play too. However, what they need to do is get together and put pressure on the township to fix the problem, not just shrug, and bring their dogs in the small dog pen. (Not an easy fix, since I think some of the holes are caused by the actions of the dogs.) On the flip side of that, I have seen people take their small dogs into the big dog pen, which causes the owners of some big dogs to either, leave with their dog so that it doesn't chase the small dog, or keep their dog on a "shorter leash," so that the little dog doesn't get hurt. Those dogs should not be penalized because "Suzie" (made up name) likes to play with big dogs, or likes to have more room to run.