Metaphors that compare humans to animals "anthropomorphize" them. Anthropomorphization is a literary device that gives human qualities to animals. These metaphors may help to highlight the similarities between animal natures and human nature, which illustrates how truly similar every living thing is to each other. Hope this helps.
What is the question here?
Answer:
In the first two sentences, Sinclair implies that the meat industry is very corrupt. He is preparing to reader for his accusations against the industry
