Lamb grunting

[randomtree]

Hello, all. My four month old st.Croix ewe lamb started grunting this afternoon, while chewing her hay. It sounded a bit like a sound my Pyrenees make, but quite a bit louder. Is this bad?

 

[SheepGirl]

It's not 'bad' -- but it's also not normal (sheep don't grunt). I had a ram lamb do this for about a week. He's fine.