CSI: Backyard

I just barely stepped out of the shower. When, I heard the kids shouting for me. So, they all came running into my bedroom. I was just standing there in my towel with two of my sons and the neighbor boy. Hello, I'm trying to get dress. Yes, it was close to 1:00pm in the afternoon, I was up late with a 5k race. The kids had discovered all of these bones out in the woods...
So, what is your opinion? What animal? I'm thinking small raccoon but I could be wrong? What ya, think?