Animals: Offered in Sacrifice
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Genesis 4:4
while Abel brought the best portions of the firstborn of his flock. And the LORD looked with favor on Abel and his offering,
Genesis 7:2–8
You are to take with you seven pairs of every kind of clean animal, a male and its mate; a pair of every kind of unclean animal, a male and its mate; / and seven pairs of every kind of bird of the air, male and female, to preserve their offspring on the face of all the earth. / For seven days from now I will send rain on the earth for forty days and forty nights, and I will wipe from the face of the earth every living thing I have made.”
Genesis 8:20
Then Noah built an altar to the LORD. And taking from every kind of clean animal and clean bird, he offered burnt offerings on the altar.