had a German shep junk yard beast w/me day and night for 10yrs. If a friend walked up and held his hand out to shake the dog had his wrist first. etc etc.
I'd introduce him to everyone in the campground and have them repeat his name. If any car or wanderer came into the campground the loose dog would go nuts and when campers found out there was no Colorado crooks around the masses would yell "Sebastian, shut up." Then he came back to our site.
when the vet said he had to be put down i took him for a boat ride w/a colt python and cement blocks. He went down painlessly Anzio style. No way was he going into a garbage bag at the vet.