The term for a baby sheep is a lamb. Lambs are born in the spring and are usually weaned from their mothers at around three months old. They are typically slaughtered for meat at around six months old.
A baby sheep is called a lamb. The term "lamb" is used to refer to a sheep that is under one year of age. After one year, a sheep is commonly referred to as a sheep, ewe or ram depending on the sex of the sheep.