Do I have a right to sue?

I went to the zoo the other day adn made my way to the monkey exibit. While i taking photos on my fuji digitial camera and munching on a tastey hot dog one of those little monkey creatures flung poopies at me! I was so upset! I droped my hot dog!!!! I was fine with the fact that I broke my camera but my hot dog??!!! What did it do to them?? SO now When I went to the zoo people and complained and then they told me "no! Greg doesn't work here!" So I decided to take legal action and sue them for the damages and emotional distress they caused. Do you think I have a good chance of winning my case?