I SO agree with the 15 second rule. My friends, who own "regular" breeds of dogs, think I am crazy to be so watchful with my basenji/whippet mix. She has, however, jumped the fence 3 times at work. Her last attempt I was able to stop by yelling "NO" at her. She, while perched atop the fence, turned, looked at me and decided she better just fall back into the fenced area and NOT go over the fence after the squirrel!! I say GOOD CHOICE!!