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Oldest polar bear in the U.S. celebrates 37th birthday at the Philadelphia Zoo

The Philadelphia Zoo celebrated the 37th birthday of Coldilocks, the oldest polar bear in the U.S. At the celebration guests sang "Happy Birthday to You" while Coldilocks enjoyed a birthday cake made of peanut butter, fish, honey, raisins and bear chow.

Coldilocks celebrates her 37th birthday, which was Wednesday, with a special frozen “cake” made of peanut butter, fish, carrots, raisin and bear chow in her habitat at the Philadelphia Zoo on Thursday, Dec. 14, 2017.
Coldilocks celebrates her 37th birthday, which was Wednesday, with a special frozen “cake” made of peanut butter, fish, carrots, raisin and bear chow in her habitat at the Philadelphia Zoo on Thursday, Dec. 14, 2017.Read moreTIM TAI / Staff Photographer