As a child in Saskatchewan, anthropologist Barbara Tedlock first learned from her Ojibwa-Cree grandmother about storytelling, massage, dream prophesy and the fruits, flowers, twigs and roots used to make strange and mysterious healing concoctions. Her grandmother told her about native "shape shifters" who changed into deer, clouds, beavers and willow trees, and about witches called "bear-walkers" who traveled at night inside glowing balls of light that commonly are seen in shamanic rituals in many cultures.