CHICAGO (WLS) -- Halloween came early for some animals at Chicago's Shedd Aquarium!
Sea otters and penguins feasted on pumpkin and holiday-themed enrichment treats on Monday. The animals feasted on ice shaped like brains and other spooky treats made to look like skeletons and eye balls.
Shedd trainers said the treats help provide positive reinforcement during training sessions and provide the animals with mental stimulation and physical exercise.
Animals celebrate Halloween at Shedd Aquarium
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