I'm glad I overslept this morning so I got to experience it first hand. Normally I'm at work by 6:30am. But I didn't wake up until 6:00am this morning. I didn't worry about being in a rush because I'm so far ahead on hours this week anyway.
When I was getting out of the shower, my wife woke up and put Tesla in the backyard and made our daughter breakfast. I threw on some clothes, made my coffee, and grabbed my lunch.
So, maybe 15 minutes had gone by from the time she let him out and I walked out the backdoor to go to work. Tesla was running around the driveway having a grand old time.
I shout, "Hey!" He comes trotting over and gives me a big doggy smile. I scratch his ears and he sits down.
My wife comes to the door and says, "How did you get out?" I look at the 6 foot tall cedar fence (undamaged) and the gate (still latched shut).
I look at my wife and say, "He jumped the fence." She says, "I guess you're not staying home today." and brings him inside.
So, important note: when the dog is tall enough to put it's head on the dinner table when sitting down, the 6 foot tall fence around the yard is not an obstacle.
EDIT: my wife thinks Tesla found a place he could squeeze/force his way under the fence. So, I'll be fixing that tonight.