Researchers discover that all kangaroos are left-handed
"True"-handedness — that is, the preference for using one hand over the other — was once thought to be a trait unique to primates. No longer: According to Discovery, research backed by the National Geographic Society and published in Current Biology reveals that some marsupials can be even more true-handed than people. In fact, kangaroos are all left-handed.
Yep. Basically every single kangaroo is a lefty.
When going about their kangaroo business — grooming, picking leaves, bending tree branches, giving high fives — wild eastern and red kangaroos choose to use their left hands. The news is a bit of a surprise even to researchers because, unlike other mammals, kangaroos don't have the same sort of neural circuitry in their brains bridging the left and right hemispheres. Further research on kangaroo brains, then, could potentially lead to medical advances in disorders linked to handedness, like autism and schizophrenia.
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Not all marsupials are lefties, though — red-necked wallabies, alas, prefer their right hands.
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Jeva Lange was the executive editor at TheWeek.com. She formerly served as The Week's deputy editor and culture critic. She is also a contributor to Screen Slate, and her writing has appeared in The New York Daily News, The Awl, Vice, and Gothamist, among other publications. Jeva lives in New York City. Follow her on Twitter.
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