Bile bear

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Bile bears, sometimes called battery bears, are bears kept in captivity to harvest their bile, a digestive fluid produced by the liver and stored in the gallbladder, which is used by some traditional Asian medicine practitioners.

Excerpt from the Wikipedia article “Bile bear”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Dan Bennett, CC BY 2.0, via Wikimedia Commons.