Green Mountain College has delayed a controversial plan to slaughter two oxen because local slaughterhouses have received threats from outside groups about actions that would be taken if they kill the animals, the Associated Press reported. The college prides itself on sustainability, and says that when one ox became unable to continue working, the right thing to do from an environmental perspective was to slaughter the oxen and to serve their meat in the dining hall. But animal rights groups and others have mounted online campaigns to save the oxen.