JS counsels against killing animals except to preserve from hunger.
History, 1838–1856, volume A-1 [23 December 1805–30 August 1834] [addenda], p. 8 [addenda], The Joseph Smith Papers, accessed September 20, 2021
I exhorted the brethren not to kill a serpent, bird, or and any animal of any kind, during our journey unless it— were necessary to preserve ourselves from hunger— I had frequently spoken on this subject, when on a certain occasion I came up to the brethren who were watching a squirrel on a tree, and to prove them and know if they would heed my Counsel— I took one of their guns, shot the squirrel and passed on, leaving the Squirrel on the ground— brother Orson Hyde who was just behind, came up, picked up the Squirrel, and said we will Cook this, that nothing may be lost— I perceived that the brethren understood what I did it for, and in their practice gave more heed to my precept than my example, which was right.