5 legged dog

I got an assignment yesterday in my ethics class that asks us to find a news story that deals with an ethical issue. I have to discuss it in person with someone and online with people and write a paper about my experience. With that being said, I had no idea what I wanted to write about until I saw the news last night. A woman in my town rescued a 5 legged dog from being sold to a freakshow owner in Coney Island. She paid $4000 to keep the dog out of the freakshow and also paid for the dog to have surgery to remove the fifth leg. What do you think about the woman who rescued the dog? What do you think about the guy who runs the freakshow? Do you think these freakshows should be allowed to exploit animals, and sometimes people, with defects? How does animal rights come into play in this situation?

Your well-thought out responses would be very much appreciated since I have to write a short paper about this and turn it in on Monday. Thanks!