Dolphins are thought of as one of the most intelligent species in the animal
kingdom - and experts believe they have put their ingenuity to use in the
pursuit of getting "high".
In extraordinary scenes filmed for a new documentary, young dolphins were
seen carefully manipulating a certain kind of puffer fish which, if provoked,
releases a nerve toxin.
Though large doses of the toxin can be deadly, in small amounts it is known
to produce a narcotic effect, and the dolphins appeared to have worked out how
to make the fish release just the right amount.
Carefully chewing on the puffer and passing it between one another, the
marine mammals then enter what seems to be a trance-like state.
The behaviour was captured on camera by the makers of Dolphins: Spy in the
Pod, a series produced for BBC One by the award-winning wildlife documentary
producer John Downer.
Rob Pilley, a zoologist who also worked as a producer on the series, said:
"This was a case of young dolphins purposely experimenting with something
we know to be intoxicating.
"After chewing the puffer gently and passing it round, they began
acting most peculiarly, hanging around with their noses at the surface as if
fascinated by their own reflection.
"It reminded us of that craze a few years ago when people started
licking toads to get a buzz, especially the way they hung there in a daze
afterwards. It was the most extraordinary thing to see."
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