For no reason at all, please give me your favourite cow-related figures of speech! (Stuff like "No use crying over spilled milk" or "until the cows come home", puns extremely welcome)

@sundogplanets

A Finnish saying:

“Katsoo kuin lehmä uutta porttia.”

“Watches like a cow at a new gate.”

As a cow may get confused in front of a new thing, just stops there and stares, so may a person.