Bobbing for Mackerel Keeps Denver Zoo Bear Cool

As temperatures rise, keepers at Denver Zoo made sure grizzly bear Tundra kept cool by encouraging her to bob for mackerel in a tub of water.

Footage released by the zoo on August 3 shows 18-year-old Tundra lean over a large tub filled with water as she tries to fish out some mackerel treats.

Tundra is also able to relax in a stream, the video shows. Credit: Denver Zoo via Storyful