On their last trip, one of my grandkids opened the kitchen door to the garage when the garage door was open...Jim and I always keep the garage closed until the dogs are secured in the house. Gus chased after my granddaughter, and crossed the threshold into the yard. He only went a few feet, but did not respond immediately when I called "come". Jim gave him the "sit" command, and he responded and let Jim walk over and pick him up. Although he was no more than a few feet from the door, I was very frightened, especially due to the fact that he had never been off-leash, and I could not predict his response to cars. When he wanted to go home yesterday, he led me to the corner to urge me to cross the street, but he sat and waited for me to tell him it was OK to cross. I will still never let him off leash, even when we are in our yard and I am standing right beside him.