Besides deer, the only other mammals that I saw in Cuyahoga Valley National Park last weekend were a couple of beavers. Beavers are always difficult to photograph because not only are they skittish, they’re also crepuscular. What does crepuscular mean, you ask? Simply that they are active during the twilight hours of dawn and dusk. It was about 6:30 AM when I took this shot and the sun was still below the horizon. Due to the low light I had to crank the ISO up to 3200. There was just enough light, however, to record the reflected colors of the changing leaves on the surface of the water.