21 May 2022

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Part two of two. Liz Bonnin concludes her search for animal intelligence as she encounters grey whales that can display emotions. She also meets Caribbean monkeys able to outwit humans, and communicates with a chimp. The programme also explores the behaviour of Seattle's crows, how bright dogs are capable of learning up to 1,000 words, and why Asian elephants spend hours looking at their reflections in giant mirrors

Category: Education/Science/Factual