PETA, bow your head || And on the sixth day, God created animal rights
Jews may eat animals, says Torah, but they may not cause suffering. And forget about hunting as a hobby.
To Jewish scholars, animal rights go back to the very beginning. Consideration for other species starts at the very beginning: There is a prohibition against causing animals any suffering as early as the book of Exodus (chapter 23, verse 5) - "If you see the donkey of someone you hate crouching under its burden, would you refrain from helping him? You shall help repeatedly."