Francis of Assisi
Saint Francis of Assisi (born Giovanni Francesco di Bernardone; 1181/1182 – October 3, 1226) was an Italian Catholic friar and preacher. He founded the men's Franciscan Order, the women’s Order of St. Clare, and the lay Third Order of Saint Francis.
Many of the stories that surround the life of St. Francis deal with his love for animals. Perhaps the most famous incident that illustrates the Saint's humility towards nature is recounted in the "Fioretti" ("Little Flowers"), a collection of legends and folklore that sprang up after the Saint's death. It is said that, one day, while Francis was traveling with some companions, they happened upon a place in the road where birds filled the trees on either side. Francis told his companions to "wait for me while I go to preach to my sisters the birds." The birds surrounded him, intrigued by the power of his voice, and not one of them flew away. Another legend from the Fioretti tells that in the city of Gubbio, where Francis lived for some time, was a wolf "terrifying and ferocious, who devoured men as well as animals." [...]When he found the wolf, he made the sign of the cross and commanded the wolf to come to him and hurt no one. Miraculously the wolf closed his jaws and lay down at the feet of St. Francis. [...]Legend has it that on his deathbed, St. Francis thanked his donkey for carrying and helping him throughout his life, and his donkey wept.
Source: http://en.wikipedia.org/wiki/Francis_of_Assisi
Francis is messenger of peace, love and union with nature. You can read his prayer right HERE.