Pythagoras and Joseph Smith on Kindness to Animals.

As long as Man continues to be the ruthless destroyer of lower living beings, he will never know health or peace. For as long as men massacre animals, they will kill each other. Indeed, he who sows the seed of murder and pain cannot reap joy and love. Attribution to Pythagoras by Ovid, as quoted in The Extended Circle : A Dictionary of Humane Thought (1985) by Jon Wynne-Tyson, p. 260; also in Vegetarian Times, No. 168 (August 1991),p. 4

Teachings of the Prophet Joseph Smith, p. 71 Kindness to Animals Required of Man The following incidents occurred while Zion's Camp was on the march from Kirtland to Missouri. In pitching my tent we found three massasaugas or prairie rattlesnakes, which the brethren were about to kill, but I said, "Let them alone -- don't hurt them! How will the serpent ever lose its venom, while the servants of God possess the same disposition, and continue to make war upon it? Men must become harmless before the brute creation, and when men lose their vicious dispositions and cease to destroy the animal race, the lion and the lamb can dwell together, and the sucking child can play with the serpent in safety." The brethren took the serpents carefully on sticks and carried them across the creek. I exhorted the brethren not to kill a serpent, bird, or an animal of any kind during our journey unless it became necessary in order to preserve ourselves from hunger. (May 26, 1834.) D.H.C. 2:71.