Latin name: Agnus
The lamb knows by their voice its own parents
Even if the lamb is in a large flock of sheep, it immediately recognizes its own parents by the sound of their voices. The mother sheep also knows its own offspring among all the lambs in the flock.
|Sources (chronological order)|
Isidore of Seville [7th century CE] (Etymologies, Book 12, 1:12): The lamb has its name (agnus) because more than any other animal it knows (agnoscat) its mother, recognizing her voice even in a large flock.