I would never let Joel be off leash, I do let Rosco because he's a giant old man with a hurt back leg so he won't be getting anywhere,lol and even then it's only at night when no one is around, and he listens. If his back leg wasn't hurt I probably wouldn't let him be off leash
I wouldn't leave any yorkie off leash even if they listen just because of how stinkin fast they are!