Leviticus 24:17-21

‘Now if someone takes any human life, he must be put to death.

But the one who takes the life of an animal shall make restitution, life for life.

If someone injures his neighbor, just as he has done, so shall it be done to him:

fracture for fracture, eye for eye, tooth for tooth; just as he has injured a person, so shall it be inflicted on him.

So the one who kills an animal shall make restitution, but the one who kills a person shall be put to death.