Do not laugh at the squirrel

But I did.
From my study window, I look out over part of the roof and the ugly but useful white fiberglass sheltering part of the deck. (Shown through the window screen, which I won't take off because it'll take me an hour and much swearing to put back on.)

I saw a squirrel walk casually across the roof and out of sight. A little later when I was away from my desk I heard scrabble, scrabble, scrabble, thud like a cartoon. 
By the time I ran down the stairs and out to the deck, there was no squirrel in sight. It must have fallen from the fiberglass to the deck here:

while the dogs were inside. Otherwise I would have heard ga-thud, ga-thud, woo woo woo as the dogs gave chase.