I don't think these two wild pigs (Sus scrofa) are actually roadkill. It's just a hunch, but I'm guessing that if a vehicle hit two wild pigs, who just happened to be crossing the road hoof in hoof, a little more of their carcasses would be left behind - not just their heads. It's more likely the heads were discarded by a hunter.
The Vinodogs and I came across them whilst we were out promenading yesterday, so I took my camera with me on my way to work today to get a picture. It is a very weird sight, and a little odoriferous.
I hope the carnitas turned out good.