The analogy seems to fit goats a little better anyway. And we'd all like to be goats, right? Nobody wants to be a cow. I wonder if the specification of the ruminant was an addition by author of the article, and not really what was originally intended.
> “Books, like the leaves and shrubs known as the browsage, provide ruminant-readers with their nutrients,” Deutsch opines, at his purplest. “What an unparalleled activity it is to browse a bookstore in a state of curiosity and receptivity, chewing one’s intellectual cud!”