When I lived in Nevada, they called it "ground shrinkage", the 30" 4-point 300 lbs buck had shrunk to 24" 3X4 and only weighed 150 lbs by the time the hunter reached it. It brings out lines like "That buck was sooooo faarrr away that I had to hold 4 feet over his back, and it had dried up and lost 100 lbs by the time I reached it".