First, my wife and I turned the dead horse on his back, like an upside down table, with his legs pointing to the sky. We tried to lift him by the legs but he was too heavy.
So we turned him upright, standing up and leaning against a tree.
The idea was that I would get underneath him and lift him up, like a shepherd would lift a small lamb on his shoulders and across the back of the neck. But the horse was too heavy for me to lift alone.
My wife tried to help, but we did not manage to lift him.
So our friend came along with his wife and the four of us got under the horse to lift him up. I did not appreciate that I was the one standing by the tail end of the horse.
We lifted the horse up the fence and he is now stuck in a bush by the fence.
Here's the photographic evidence.