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Chicago's Brookfield Zoo Tries To Keep Animals Cool During Heat Wave

BROOKFIELD, IL - JULY 18: A grizzly bear cools down with a swim in his enclosure at Brookfield Zoo on July 18, 2013 in Brookfield, Illinois. A heat wave continues to grip much of the country today with temperatures expected to top 90 degrees in forty-seven states. (Photo by Scott Olson/Getty Images)

Chicago zoo: how animals beat the heat

Chicago's Brookfield Zoo is trying to help its animals keep cool during a stifling heat wave that has settled over most of the United States. While some animals are lucky enough to take a dip in the pool, others received slabs of ice and frozen blocks of meat in their enclosures for some relief.