The lamb is a newborn sheep. Even adult sheep are pretty docile, and feed mainly on grass, alfalfa and grains such as corn, oats and grain sorghum. Lambs have 20 temporary teeth; the adult sheep has 32 permanent teeth at maturity.

Apparently the sheep's diet can be damaging to their teeth, because some literature reports that their teeth can become worn down, which can lead to starvation. One article on the Internet reports that England's Ministry of Agriculture is conducting trials to see whether experimental false teeth for sheep will lead to a decrease in sheep mortality and an increase in the birth rate of lambs.