Duncan is such a house dog!! He loves to be outside and go to the park and play. And he loves to be outside in the yard but only if someone is there with him. He's fairly aggressive toward strangers so I would never leave him outside alone unless it was with a 8 ft. privacy fence. He has been known to climb the chain link fences and chase after small animals such as rabbits and squirrels. At my father's house, the fence is the 8ft privacy wood fence except in one area by the driveway. My father and Duncan were hanging out in the yard and my uncle came to visit unexpectedly. Duncan had met him before but when my uncle walked up to the fence and reached over to pet Duncan, Duncan bit him. He's protective of his yard and my father so I would never leave him outside unattended...
He's used to having someone with him now so I don't think he would adjust well to being outside alone at this point, even if I were to let him.