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The quizzers also put their wits to the test against Kanzi, a Bonobo ape, who is able to communicate with humans using pictures and symbols on a Lexigram.

Speaking about the challenge, Mark recalled: “Kanzi is like the Einstein of the primate world, he’s been doing pictograms all his life and we had thirty minutes to learn all of these images which was quite hard.

“I think he got 30 out of 30, and I think we got 16 or 17, each of us.”

Anne added: “Kanzi has been learning these symbols for years and years and we only had half an hour.”