I have tanned deer and bear hides with the hair on with this mixture, for a deer 5 gallon hot water,dissolve 5 pounds salt and 1/2 pound alum, the alum sets the hair. Scrape all meat and soak for 2 weeks stirring daily, you will have to put weight on to keep it under, when you take it out stretch it out and nail it down to something, when dry you can leave it stiff or put a dull axe in a vice and saw the skin side breaking down the fibers. To hang on the wall or make a rug this works and it don't cost a arm and leg.

Martin