The sole work of La Loba is the collecting of bones. She is known to collect and preserve especially that which is in danger of being lost to the world. Her cave is filled with the bones of all manner of desert creatures: the deer, the rattlesnake, the crow. But her speciality is said to be wolves.
And when she is sure, she stands over the criatura, raises her arms over it, and sings out. That is when the rib bones and leg bones of the wolf begin to flesh out and the creature becomes furred. La Loba sings some more, and more of the creature comes into being; its tail curls upward, shaggy and strong.
And La Loba sings more and the wolf creature begins to breathe.
And still La Loba sings so deeply that the floor of the desert shakes, and as she sings, the wolf opens its eyes, leaps up, and runs away down the canyon.
Somewhere in its running, whether by the speed of its running, or by splashing its way into a river, or by way of a ray of sunlight or moonlight hitting it right in the side, the wolf is suddenly transformed into a laughing woman who runs free toward the horizon.
(adapted from) Women Who Run With Wolves