fully fenced, I dont think I could deal with an unfenced yard lol mostly because of my moms dogs, they WOULD leave, my 3 are a differnt story all together, I let them off leash in unfenced areas on a regular basis. Happy and Misty I would never leave unsupervised in an unfenced area, but Happy I leave loose in peoples front yards all the time when she is not allowed in, she doesnt go anywhere, I just periodily check on her to make sure she is behaving.