Pourquoi tales are oral stories that have been written down. They use animal traits or human customs to help us understand how something came to be the way it is. A few examples of Pourquoi tales you might want to check out from the library are:
Alexander, E. (1989). Llama and the great flood: A foolktale from Peru. New York: Crowell.
Bruchac, J. (1993). The First Strawberries: A Cherokee story.New York: Puffin.
Goble, P. (1983). Star Boy. New York: Bradbury.
Hurston, Z.N. (2004). What's the hurry, fox? And other animal stories.New York: HarperCollins.