You’ve got to see this.
We got our new Briard puppy two days ago. She’s only 14 weeks old. Yesterday, I put her in her large X-Pen for the first time. I went to work in my home office and within 5 minutes, there she was at my side! I couldn’t figure out how she had gotten out. I put her back in. Two minutes later, there she was at my side again. I set up the camera and my wife and I watched her in action. Finally my wife chickened out and was too afraid to let her jump out in case she got hurt.
The dog is 30 lbs. and the pen is three feet high!