[foolfoolz]

it’s mentioned many times in the linked article happy cows produce more milk

[aaronbaugher]

But do they produce enough more milk to offset the electric bill? That will make the decision, if a corporation is considering a "dark dairy."

[DonHopkins]

But happy cows can cause unhappy roosters.

https://www.youtube.com/watch?v=Up880afV_qs