When I worked for the D.O.T. we had to pick up roadkill, and we had two spots where we threw the carcasses. I always wondered if people of the future would run across the dumping area and wonder how or why they all got there. Pigs, raccoons, possums, deer, dogs, cats, squirrels, skunks, birds... all kinds of odd stuff.
These look like foul play, though, being shot and all.