Then we say they have 'a full mouth.' After that you can't tell their age exactly by the teeth.

Now, run back to your mother," and he let the lamb go.
"Do they always know their own mothers ?" asked Miss Laura.
"Usually.

Sometimes a ewe will not own her lamb.

In that case we tie them up in a separate stall till she recognizes it.

Do you see that sheep over there by the blueberry bushes the one with the very pointed ears ?" "Yes, uncle," said Miss Laura.
"That lamb by her side is not her own.