In the pursuit of finding novel things to do, we've been taking Locksley to as many dog-friendly places that we can find. Fortunately the DC Metro area has quite a few.
Recently we went to both the Quiet Waters park in Annapolis, and the Greenbelt Dog Park. The Annapolis dog park was nicer - it was huge, had a dog beach (unfenced which was not so good for us) and lots and lots of people and well behaved dogs. It cost $5 to get into, though, which was kind of lame but understandable since the park was HUGE and obviously well maintained. The Greenbelt Dog Park was nice and close, but when we went there weren't many dogs around (and the ones that were there weren't as mellow and playful as the Annapolis dogs).
Regardless, Locksley had a great time and was exhausted by the end of it. More pictures in the Locksley photo album, but a couple silly ones here: