Although male kangaroos do appear to flex their muscles to show off their impressive figures, researchers in a 2013 study said it is not currently possible to determine whether or not such behavior is ...
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Fact Check: About That Claim Male Kangaroos Purposely Flex Their Biceps to Impress Females
Male kangaroos purposely flex their biceps to impress females. Rating: Unproven (About this rating?) Context: Although male kangaroos do appear to flex their muscles to show off their impressive ...
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