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Chimps too dole out tit-for-tat behaviour to friends and foes


October 29th, 2008 - 2:06 pm ICT by ANI
London, October 29 (ANI): Chimpanzees very closely observe who all are grooming them, and ultimately return favours to them while freezing out others, according to a new study. Cristina Gomes, a ... Read more...

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