Okay I'm just going to mention this to get it off my mind. Earlier this year I stopped to move a box turtle off the road. I like to inspect them when I move them, usually, but this one creeped me out and I moved it and moved on. It seemed to have not been recently injured. Recently, being the important word. It moved fine, seemed ok, considering. It looked like someone or something had stepped on the left rear quarter of it. Neck and front legs area had extra flesh poking out of the shell. Really it looked like I imagine it would if its internals got pushed to the front due to a squish event. But it was like this had happened years ago.