any animal left over night with the guts in it will be spoiled, even if in the snow, i worked at a butcher shop for 5 years and we took in high volumes of game and i only saw a few where we salvaged the front shoulders, never leave an animal in the field overnight with the guts in it, in the future if u have an animal in the woods overnight get it to a fridge or meat cooler asap and hope for the best u should cut it up within 2 days of being cooled