Factropolis -- A new fun fact every day!

Sunday, October 18, 2009

Grizzly bears have remarkably stretchy bladders - they can go for up to three weeks without urinating.

See also:
- U.S. Fish and Wildlife Association: Grizzly bears
- Interagency Grizzly Bear Committee

keywords: nature, bear, animals, pee, urine, bladder, trivia, fun fact, fact of the day


  • Thats just f' ing cool....

    By Blogger E rock, at September 03, 2007 11:03 PM  

  • Well, that could charitably be called half-right.

    Bears CAN go for long periods without urinating, particularly while hibernating, but not because they have especially elastic bladders. In fact, such a contrivance wouldn't help much: the urine would simply back up and cause damage to the kidneys, even with a super-stretchy bladder.

    Instead, bears recycle their urine during the winter months, using the water to stave off dehydration and the protein components to make new proteins. The fact is that bears probably never experience a full bladder during the winter.

    By Anonymous Grumpy Grizzley, at February 18, 2008 6:44 PM  

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