A friend of mine and I were descending from a mountain pass one day and he exclaimed, " I almost hit a turtle!" My wife has a soft spot in her heart for turtles and I like reptiles and amphibians in general, so I swung around and went back. Sure enough, it was a little snapping turtle about the size of a silver dollar. I noted the direction of travel and moved him across the road.
NOTE... If you see a turtle, terrapin or tortoise crossing the road, make sure that you move it to the side where it is going. They have a good sense of direction and are pretty bullheaded about getting where they want to be.