Preslee has done this also. Its hard not to laugh. I think the funniest thing that my dogs have done like this is Recon. When I moved into this house I didn't have a sliding door but we put one in so that I could have easier access to the hot tub and back yard instead of going all the way through the house then out the side door and then around the back of the house. Well when we were putting it in and doing the finishing touched we had it open all the time. Then when we finished, I shut the door but Recon was used to being able to run out and chase birds out of the yard without having to have the door opened for him. He didnt see the glass cause I had just cleaned it and he went running after some birds and WHAM!!!! Right into the glass. SInce then I dont keep the glass as spotless. I laughed so hard I thought I was going to pee my pants. But I felt horrible for laughing like that at him.