Saint Francis and the Wolf — Jane Langton

This lovely retelling of one of the lesser known tales of Saint Francis centers on the legend of the great wolf of Gubbio, a ferocious canine who terrorized the town and was slowly reducing it to penury and starvation. In nearby Assisi, Brother Francis heard of their plight and came to their rescue. Unbelievingly, the villagers watched from the ramparts as Brother Francis called to the wolf, tamed it with his tenderness, and made it pledge that if the people of Gubbio would care for it, he would do them no harm. He took the pledge and lived in harmony with the citizens of the city until his death.