After watching last night's "The Secret Life of Dogs" on ITV1, I've been prompted to post this picture of Barney at Cooden Beach in mid-shake. There's nothing new in this sort of picture, but it's very hit and miss trying to photograph it. Apparently, there's a sort of corkscrew motion going on, starting at the head and working it's way down the body. Whatever it is, don't be near it once it starts, or you're gonna get wet!
Also try Googling 'Carli Davidson dog shake pics' for some lovely studio pics of contorted dog faces during a shake.