This is an awesome dog park. As long as you're not there during rush-hour. From 5-8 this place is insane. Any other time of day, it's great. Unfortunately, there's usually one too many bad dog owners there when it's busy. We've seen too much drama (dog fights/owner fights) at this park so we simply don't go anymore.
The parks in Tempe off Curry/College & S Mitchell/10th are far more mellow.