Zoo animals celebrate Halloween

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Friday, October 31, 2014
Vicky, an almost 2-year-old sloth bear, at Brookfield Zoo in Brookfield, Ill.
Vicky, an almost 2-year-old sloth bear, at Brookfield Zoo in Brookfield, Ill.
Vicky, an almost 2-year-old sloth bear, at Brookfield Zoo in Brookfield, Ill.
Kamba holds onto pumpkins while snacking at Brookfield Zoo. The western lowland gorilla is 10 years old.
Hudson, a 7-year-old polar bear, snacks on a pumpkin at Brookfield Zoo.
Bhalu, an almost 2-year-old sloth bear, enjoys Halloween 2014 at Brookfield Zoo.
Jim, a 19-year-old grizzly bear, props a pumpkin up against tree limbs at Brookfield Zoo.
Hudson, a 7-year-old polar bear, snacks on a pumpkin at Brookfield Zoo to celebrate Halloween 2014.
Adelle, a 38-year-old pygmy hippo, enjoys a pumpkin for Halloween.
Adelle, a 38-year-old pygmy hippo, enjoys a pumpkin for Halloween.
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Zoo animals celebrate HalloweenVicky, an almost 2-year-old sloth bear, at Brookfield Zoo in Brookfield, Ill.
Jim Schulz/Chicago Zoological Society

BROOKFIELD, Ill. -- No trick! Just treats! Animals enjoyed pumpkins this Halloween at Brookfield Zoo in Brookfield, Ill.

Some of the pumpkins were decorated with raisins and peanut butter. Zoo staff say the treats help mentally stimulate the animals since pumpkins aren't part of the regular diets.