*** A mailman got a new route. On the first porch he came to he was confronted by a ferocious-looking German Shepherd poised to jump. The mailman approached the mail
box and the dog sprang straight up, 5 feet, and landed in the same place, the mailman
was relieved to see the dog keep his distance. He asked the owner, who came to the door, "Why did he jump straight up like that?" The reply was, "Oh, we took his chain off yesterday, but he has not realized it yet.(3)