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Grown-up chimps are less likely to help distressed friends
Chimpanzees of all ages will comfort upset companions, but adult chimps do it less 鈥� perhaps because they are more selective about who they help
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Monkeys can be tricked into thinking all objects are familiar
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Primate brains react differently to faces of friends and VIPs
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Signs of Alzheimer鈥檚 found in chimpanzees for the first time
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Monkey mafia steal your stuff, then sell it back for a cracker
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Our common ancestor with chimps may be from Europe, not Africa
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Ancient humans: What we know and still don鈥檛 know about them
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Chimps pass on sponge drinking trick like a family tradition
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Mystery human species Homo naledi had tiny but advanced brain
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Ebola vaccine promising in chimps but may never be used
A promising oral vaccine could help protect Africa鈥檚 big apes from the deadly Ebola virus, but a ban on captive ape research means it may never see the light of day
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Monkeys and dogs judge humans by how they treat others
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Being friendly puts monkeys at risk in times of revolution
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Chimps beat up, murder and then cannibalise their former tyrant
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Yellow fever outbreak is killing off rare monkeys in Brazil
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