animal rights, celebrity, Contributor, sports, vegetarianJoshua KatcherJuly 27, 2010animal activism, jake shields, mma, Pierre Grzybowski, sherdog, UFC, vegan, vegetarian fighter Animal Advocate Jake Shields Signs with Ultimate Fighting Championship animal rights, celebrity, Contributor, sports, vegetarianJoshua KatcherJuly 27, 2010animal activism, jake shields, mma, Pierre Grzybowski, sherdog, UFC, vegan, vegetarian fighter