In 1984, I published a book about the past, present and future of zoos. One chapter was about the idea, quite new at the time, of behavioural enrichment. That is, giving animals the opportunity to perform some aspect of their natural behaviour. High-tech versions, like a contraption that fired live locusts into the fennec foxes’ enclosure at Antwerp Zoo. No tech versions, like simply making sure that the sea otters in the Seattle Aquarium had a supply of stones with which to demolish a bucket of clams. And all sorts of in-between examples.
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