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It Turns Out Kangaroos Are Lefties

Red and eastern gray kangaroos are all left-handed, researchers find

(Newser) - Handedness (the preference for using one hand over the other for nearly all tasks) likely emerged in humans soon after we began to walk upright. And for years scientists have thought this trait belongs almost exclusively to bipedal primates, given it's never before been observed in quadruped creatures. Now... More »

Some Male Marsupials Die After Marathon Mating

14-hour sessions take everything out of them: Study

(Newser) - Some male marsupials have quite the end-of-life experience: They "mate themselves to death," explains the lead author of a new study in the journal PNAS . Researchers found that in some insect-eating species, the males buck themselves up for one grand finale, then mate with as many partners as... More »

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