Technically a GIF is still a picture, animated or not, and I
did make it using only Photoshop, but I get your point Shreddingskin.
My Beaver pic just started as an experiment to see if I could do some parallax scrolling for a background. It turned out ok so the next logical step was obviously to put a waterskiing beaver in the foreground


And since I couldn't think of anything else worth doing with that beaver source pic I made the GIF my entry.
There
was a suggestion for an animation contest a couple of months back (might have been Arsonist, I can't remember).