Hmmm. I walk him a few blocks to a large (15 acre) dog park, with usually no less than 25 dogs running around off leash. He absolutely LOVES the place, since he can run and wrestle with abandon. I love it because he gets himself good and tired, and I can leave him home for the day with good conscious. I'd hate to give the place up for the POSSIBILITY that an Airdale MIGHT show up, but it would be much worse for him to maul someone's dog.

He's very responsive to commands usually, but not when an Airdale shows up...

Any other thoughts?