I really like the squirrel in the ribs but I'm wondering where the rest of the skeleton's legs are. And why the top of his head is a different color that the rest of his skull.
I believe that the skeleton used is like a standard display model, that usually has the top of the skull removed to weigh the brain. Having said that, unless that is shadowing, I would recolor the cap and eliminate the stryker saw line, perhaps with the spot healing tool. I think the missing bones were carried away by scavengers, big vicious scavengers that you wouldn't want to meat.