Valley Parkway, Rocky River Reservation, http://lakewooddogpark.com
This park, less than half a mile from the Detroit Avenue entrance to the Metroparks, has everything your dog could ask for. There's ample space to run, single women, other dogs to sniff, and single women. It's a win-win! And if you don't own a dog, try pretending that yours ran away. You'll be beating 'em off with a stick.