As a responsible owner I do not let Zero off the leash . This is because I haven't trained him to come back ALL the time..Sometimes he will disobey. Plus, what if a dog and Zero didn't like each other and Zero hurt the other one? that would not be good at all. Zero can be aggressive to other dogs so I really would rather be safe than sorry.

dont let some person who doesn't know your dog to tell you what to do.