Elaine Sinclair I have 7 dogs currently and none of them EVER runs out, because I make sure they are safe. Plus they are micro chipped and have collars with tags, that's what responsible ownership of dog is - PERIOD. You are looking for excuses for owners, I don't. Need to be much smarter than dog who can outsmart you and "run away, or any number of things"......as you suggested. Owners should predict those things and PREVENT. NO EXCUSES, and that's my opinion, you can have yours.