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Available for over a year

For years Twycross Zoo has been well known for it's assosciation with the PG Tips adverts, which made us believe Chimpanzees could behave and act just like us. But these days the zoo is putting it's efforts into helping the chimps behave less like people and more like wild animals. Our Science Correspondent David Gregory-Kumar has spent a few days behind the scenes at Twycross to see what's going on and he joined us on the programme.