Mud baths aren't just for spa-loving humans.
A National Geographic video captured both grizzlies and black bears submerging in what's referred to as a "bear bathtub" in Yellowstone National Park. The natural swimming hole serves as a place for the bears to cool off, take a drink and get squeaky clean.
Cameras placed around the hole recorded the action, giving insight into the iconic predators' behavior.
Oh, and of course some of them couldn't help but take a swipe or two at the cameras.
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