I swear this dog is an escape artist. He is a ten year old purebred beagle named Gizmo. He can get out of most anything it seems. Especially the backyard fence. He has suddenly taken up the habit of digging holes to get out, those have been filled in and he hasnt seem to be doing it again until one of the planks in the back fence broke and he dug a hole under the fence and got out since he's to big to fit between the little gap, Im suprised he could even squeeze under the fence to begin with since the hole is not that big or deep. I'm getting really tired of driving to the empty lot behind our house, crossing some elses property to get there to get him. Any tips to help me stop this habit? Boundry training perhaps? He is a hound so its a little difficult to stop him from following his nose all the time. The help would be appreciated I would hate for him to get hurt or lost, though he does come back after he's done exploring the lot and I call him a thousand times.