Dr Katja Liebal is at Twycross Zoo in Leicestershire to study the chimps in their enclosure. She believes that the chimps have their own complex system of communication and hopes to compile the world’s first chimpanzee dictionary. Subscribe: http://bit.ly/BBCEarthSub
Taken from Extraordinary Animals Series 2
New on Earth: https://bit.ly/2M3La96
Wild Thailand: https://bit.ly/2kR7lmh
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