I doubt that PETA members are very happy about this. They'll probably try to take the case all the way to the Supreme Court!!!
District Judge Jeffrey Miller became the first to hear arguments for extending human rights to animals in the United States. However, Miller decided to throw out the case before the hearing began. "As 'slavery' and 'involuntary servitude' are uniquely human activities," he explained in his decision, "there is simply no basis to construe the Thirteenth Amendment as applying to non-humans."
LINK: http://www.treehugger.com/ocean-conservation/constitutional-rights-not-extended-animals-federal-judge-rules.html