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Scientists have observed wild chimpanzees tucking into an unusual snack: tortoises, whose hard shells they crack against tree trunks before scooping out the meat.
In a paper published Thursday by the journal Scientific Reports, researchers from Germany say the behavior they spotted dozens of times in a group of chimpanzees at Loango National Park in Gabon bolsters the notion that humankind's distant cousins develop their own distinct cultures.
Tobias - Deschner - Authors - Paper - Chimpanzees
Tobias Deschner, one of the authors of the paper, said that while chimpanzees and tortoises coexist elsewhere—and other primates such as baboons and mandrills are known to feed on young, soft tortoises—scientists have never before spotted any that crack open and eat the reptiles.
One explanation could be that the Loango park region also has abundant hard-shelled fruit, like that from the strychnos tree, that also needs to be whacked against trees to open, prompting some enterprising chimpanzees to try the same on passing tortoises, he said.
Object - Thing - Deschner - Primate - Researcher
"They see this is a hard-shelled object with some interesting thing inside and I need to crack it open," said Deschner, a primate researcher at the Max Planck Institute for Evolutionary Anthropology in Leipzig. "If I can do that with the fruit and have the same problem with a hard-shelled animal with something inside that I want to get access to, then I can say 'OK, why not do it in exactly the same way?'"
Some scientists dispute the idea that chimpanzees are capable of this kind of mental leap, much less of passing the...
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