Well I finally got my back yard fenced in. My pups love it. My older one is a 8mo old lab. For now anytime either of my dogs are out in the fenced in portion i am with them. But instead of putting her in another room while im training or socializing my other pup, id like to let her out in the yard. Its 4ft chain link. Im sure if she was determined to climb it she could but nothing seems to peak her interest that much. So when did you guys start to leave you dog outside unattended and what steps did you take to ensure saftey? Thanks