NEW YORK - OCTOBER 24: Zuri, a 26 year old silverback gorilla, heads one of the troupes at the Bronx Zoo's Congo Gorilla Forest Exhibit October 24, 2010 in the Bronx borough of New York City. (Photo by Yvonne Hemsey/Getty Images)
NEW YORK - OCTOBER 24: Zuri, a 26 year old silverback gorilla, heads one of the troupes at the Bronx Zoo's Congo Gorilla Forest Exhibit October 24, 2010 in the Bronx borough of New York City. (Photo by Yvonne Hemsey/Getty Images)