"We crossed the Embarras river and encamped on a small branch of the same about one mile west. 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 his 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."
Joseph Smith, History of the Church of Jesus Christ of Latter-day Saints, 2:71-72