We have a fenced in yard. I did it myself. Its a wood fence with 4" wide fence board spaced 4" apart. It is great for Hershey, she's over a year and 65 lbs. She is way too big to escape, Aand we play fetch every day. Well, this week we welcomed Gus to our home, and he is a little smaller, somewhere in the 20's pounds at 4 months. We had them in the yard, supervised and they played well all day, 6+ hours. We stepped inside for a second to do our own pee break and we hear the jingle jingle of dog tags at our front door....the fence doeasnt attach to the front, only to the back!!!! Is it a neighbourhood dog coming to play???? NO, its GUS!! How the heck did he escape? and thank goodness he didnt run away, he came straight to the door asking to come in for some loving. what a good dog. I need to adjust the fence.