Sheep: Offered in Sacrifice from the Earliest Age
Source: TTT
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 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.
Genesis 15:9, 10
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.