SF Zoo chimpanzees celebrate Halloween and Giants

October 28, 2010 6:54:20 AM PDT
A troop of San Francisco Zoo chimpanzees celebrated Halloween and the World Series.Cobby, Tallulah, Maggie and Minnie went trick or treating, to preview the annual 'Boo at the Zoo' celebration. The official 'Boo' will be held this weekend, with special Halloween events zoo wide. Costumes are encouraged!