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The original was posted on /r/todayilearned by /u/CatPooedInMyShoe on 2025-06-08 09:58:42+00:00.

Original Title: TIL crocodilians have an extra left aorta on the side of their hearts, which scientists believe is used to shunt gas-rich blood from their lungs to their stomachs so they can digest large meals before the meat rots. The carbon dioxide in their blood is converted into gastric acid.