Evidence for the kangaroos diet preference?
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Research on wild kangaroos in Australia is challenging the notion that having a strong hand preference is a trait that developed primarily in people and other primates. Scientists said on Thursday that these Australian marsupials displayed a natural preference for using their left hand for feeding, self-grooming and other activities. So while most people are right-handed, most kangaroos are lefties. Beyond providing new insight into kangaroo behavior, the research sheds light on a unique aspect of mammalian evolution, the researchers said.
"We found a pronounced degree of 'handedness,' comparable to that in our species," said biologist Yegor Malashichev of Saint Petersburg State University in Russia. "In bipedal kangaroos, in all actions studied, there was a significant left-hand preference in the vast majority of individuals."