Everyday is a school day

I tell you what, livin' out on the land, deep in the heart of Texas, allows time for learnin'. As we took the kids out for their shootin' practice, we come up on this here cowpie. My sister notes its size (approximately 7" across, and about 4" high). 'Sis says, "Too much protein. When they pile like that, there's an inbalance in the cows' diet. Or is it too much fiber?" After we returned to the house, she took out her cattle-raising handbook to research the answer. How could I ever have learned this in the Santa Cruz mountains?