So, here's the answer! Several of you were right on track. It IS a muzzle. I knew it was a muzzle, but I wasn't sure what kind of animal you'd use it on. The man behind me at the auction told me that it is a calf muzzle and is used to wean calves from their mothers. Interesting idea... He also told me that this one is pretty cow friendly. Some of them had spikes on them, so when the calf goes in to nurse, it pokes mama and she gives said child a good kick! Yikes!