When I was growing up, had an uncle who was crowned Jersey King three years running at the national Ag Fair. He quit showing after that - at least the cows, then showed his soybeans.
But I sure loved spending time in the summers on the farm. In those days the cows were hand-stripped - don't know if they still are - and of course one of the first tricks I learned was to shoot a warm stream of creamy milk directly into my mouth. I loved laying my head against the clows flanks and taking in their warm 'cow smell' while I was stripping, and then getting the big jug of milk from the cooler to take in for our breakfast.
It's really the only time I have ever liked milk.
And as an aside, I think that you will find that 'beller' is just a corruption of 'bellow'. Many country words have made that substitution of the 'r' for the 'w'.
Anything is possible. The old farmer across the road used to yell at us kids to 'quit yer bellerin' when we were playing in his pine windbreak, and especially when some one got hurt by falling out of a tree or tripping.
And yes, kids and barn cats are sure missing a treat if everything is now done completely by machine.