UNITED STATES - NOVEMBER 16: Two African elephants snack on bamboo at the elephant exhibit at the Philadelphia Zoo in Philadelphia, Pennsylvania, Tuesday, November 16, 2005. The Philadelphia Zoo, which has featured elephants since it opened as the nation's first in 1874, is considering seeking new homes for the behemoths after failing to raise enough funds to expand their habitat. (Photo by Mike Mergen/Bloomberg via Getty Images)
