Professor: In the meat business you separate the meat into different batches and they turn it into animal feeds

Professor: In the meat business you separate the meat into different batches and they turn it into animal feeds
Girl in class: They turn meat into animal feed again?
Professor: Well what they do is-- With chicken's for example...
Girl in class: They feed the chickens to the chickens?
Me: *facepalm* What does she think dog and cat food is made of?
Professor: Uhhh not necessarily chickens. with chickens, some feathers will go to other uses and some will be powdered for protein and fed to various cattle. there's blood meal and all kinds of stuff
....
Girl: what you are basically saying is that they are making animals who are actually herbivores into carnivores...
Me: *facepalm*