This is one of my favourite paintings Yellow Kidney of the Piegan. Taken from the historical photographs of Edward S. Curtis. The Piegan sought the supernatural powers they believed were contained in the land and in the animals. An animal would appear to them in a dream, providing the dreamer with instructions to obtain a particular power. The dreamer had to take objects, place them in a rawhide pouch, called a medicine bundle, and engage in specified rituals and songs. The most powerful of these was the beaver medicine bundle that the tribe used to attract buffalo.
Karen Ivey, Crystal Healing and Readings. Pastel paintings of Native Americans.