We had a cow once that was standing sideways next to a thirty-foot in diameter, two-foot tall steel tank.  Another cow or bull came along, pushing the one standing sideways, so she ended up upside down in two feet of water.  By having two chances to die, one from having her back downhill, and the other from drowning, she was very dead when I found her.  It took a trip back home to trade pickups, so that a Hydra-Bed could be used in fishing her out of the water without damaging the tank.  The Hydra-Bed handled the situation very well, as the dead bloated water-logged cow weighed about the same and was about as round as a bale of hay.