PETA would not exist without Peter Singer. Ingrid Newkirk, founder of Peter, has said that reading Singer's book Animal Liberation changed her life and resulted in her founding of PETA.

But is it okay to sleep with our furry friends? On this, there is some disagreement. If the animal is not harmed in the process, is there anything really wrong with it, asks Singer? Omigod, of course there is! says Newkirk. Teku, guys, teku.