So the guy is walking and finds the dead dog on the side of the road. After 4-5 days post-mortem the deceased had to be stiff, cold, and (depending how cold it has been outside) in the early stages of decomposition. It couldnt have smelled very good. And you know there were insects.
And what does the guy think? "Hey, I'm gonna get me a piece of that"
Makes me wonder what his girlfriend looked liked.