Bears don’t pee or poop when they hibernate. Their bodies recycle or simply stop making what normally needs peeing out every day — wastes such as urea (“yer-ree-uh”).
They also shut down No. 2. Bears stop eating several days before they go to bed in fall. Some waste still builds up inside. But it forms a special intestinal plug. Scientists call it a fecal plug. Think of it as a cork in a bottle.
A Yellowstone National Park study says, “This plug may keep the bear from defecating [pooping] inside the den during hibernation, as fecal plugs are found just inside or outside the dens of bears that have just emerged.”
now aren't you glad I told you????