Near the post office is this long row of fifty or so trimmed poplar trees. Whoever trims them must spend a lot of time trimming them as they are always trimmed. Only, it turns out that it’s not a person who keeps these trees looking so neat. It’s a pair of cows. They go along the fence by the trees, nibbling at the trees and eating all the branches and leaves they can reach. In the process they keep the bottom branches of the leaves all trimmed to the same height.
The next time you are in the country and see a row of trees with their lower branches all trimmed neatly. Look for cows. They’re most likely the ones trimming the trees.