A Moo Collar, Maybe?

They make bark collars for dogs, to make them be quiet.

Do you think I could find a "moo collar" for my cow somewhere? ;)

I am working on weaning my calf, who will be five months old in a few days...

And she is not happy!!

Her bellowing is echoing throughout our little valley that we are in, and it's LOUD!

How could something so small, be so amazingly loud? Ugh...