Sheep: Offered in Sacrifice from the Earliest Age

…while Abel brought the best portions of the firstborn of his flock. And the LORD looked with favor on Abel and his offering,

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.

And the LORD said to him, “Bring Me a heifer, a goat, and a ram, each three years old, along with a turtledove and a young pigeon.”

So Abram brought all these to Him, split each of them down the middle, and laid the halves opposite each other. The birds, however, he did not cut in half.