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flag Scientists find chimpanzees engage in "contagious urination," influenced by social rank.

flag Researchers from Kyoto University discovered that chimpanzees display "contagious urination," where one chimp urinating increases the likelihood of others following suit. flag This behavior is more synchronized and influenced by social hierarchy, with lower-ranking chimps more likely to urinate after higher-ranking ones. flag The study, published in Current Biology, observed 20 captive chimps over 600 hours, marking the first exploration of this phenomenon in animals.

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