One of the best dog parks I've been to!
This is a beautiful space at Lake Metroparks Farmpark. It provides a wide open space for your little doggies to run and play. There are essentially two dog parks - one for small dogs and one for large dogs - all enclosed and with an extra secure gated entrance. There is also a pond, accessed through the large dog area for your dogs to swim when it's warmer.
The park is very clean, well-maintained and offers fresh water. Plus the scenery is very nice, so pretty during fall. I definitely recommend heading out to the country (seriously, it feels like that, but it's Kirtland and very easy to get to when on east side) and visiting this park - your dogs will be happy and exhausted afterwards.