I just talked to Pooch's owner. He called to apologize, after calling up and down the street to track me down. Animal Control wouldn't give him my name, which I can understand and appreciate. Anyway, Pooch's shots ARE up to date, and he's now in quarantine with his own vet, and will be neutered before returning home. Owner also assured me that he will be installing a shock fence to keep him on his property. This is good, as Pooch tends to view the yard to his north as his land too. This as much as I can ask for at this point. I hope the shock fence is effective; some dogs learn to tolerate the moment's pain to gain their freedom. Since this pooch usually doesn't range far anyway, this might work for him. If not, they'd need a real fence. However, next time I ride after my leg is better....I'll have my water bottle ready to squirt him if he gets too close