I was out today doing a little shed hunting on our property and came across a dead bear. I spied him about 100 yards away and wasn't sure if it was alive of what. I stood there and used binoculars to look him over. It wasn't moving, but I still wasn't sure. I yelled a couple times at it and it still didn't move. I got within 20 yards or so and threw a couple limbs at him and he wasn't moving. I walked up to him and poked him a couple times just for good measure. There isn't any evidence of a gun shot, or any other kind of wound. I can't figure out what could have caused this. The bear looks to go somewhere in the 250-300lb range and his teeth were in good shape so I know he wasn't an old bear.

Any thoughts?