They didn't use all of the bison. They would run entire herds off of a cliff and only take the parts they wanted. https://en.wikipedia.org/wiki/Buffalo_jump
ADMIRES THE NATIVE AMERICANS OF THE PLAINS BECAUSE THEY USED EVERY PART OF THE BISON, NOTHING WENT TO WASTE. WON'T EAT A HOT DOG BECAUSE IT MIGHT CONTAIN COWS' LIPS.