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How do you tell if an elephant is having a good day? Or spy on the nocturnal squid-catching skills of the albatross? This week at the British Science Festival, Prof Rory Wilson of Swansea University has been divulging the secrets of the animal kingdom, including penguin diving habits, albatross hunting methods and the emotional states of elephants.  “The problem with animals is we often want to know things about them that they don’t want to tell us or that aren’t easy to find out. The only way to do it is to put something on [the animal] that will accompany it,” Prof Wilson said.

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