All religious scriptures promote non-violence as the first principle of religious life. Whatever we see is created by God. No one has the right to kill anything or anyone, because no one can create anything. We cannot create an animal. We cannot create even a mosquito, so we should not kill even a mosquito.
Spiritual life means non-violence.
Animals should be protected. Whatever you do unto the least of my brothers, you do it unto me. You shall not eat the fat of any ox or sheep or goat. Although the fat of an animal that has died naturally or was killed by wild beasts may be used in any other way, you may under no circumstances eat it. For whoever eats the fat of an animal offered as a sacrifice to the Lord, he shall be cut off from his people.