This was a classic reaction photo. My wife & I (before kids) were camping at Acres of Wildlife CG in Maine. Sitting down at our campsite we hear a squeaking noise near our truck. We run over to see this snake munching down a poor little frog. I grabbed the camera and took a bunch of pictures (in the 'olden days' a 'lot of pictures' meant 4).
I wish I had a digital camera at the time, I would have seen the blurr and compensated for it.