NOAA/Dolphin Ecology Program

NOAA/Dolphin Ecology Program

A new study has found that dolphins are capable of recognizing their friends after being apart for up to 20 years, according to an article on Smithsonian.com.

In tests of 43 dolphins kept in captivity around the United States, Jason Bruck of the University of Chicago found that the animals reacted differently upon hearing whistles that belonged to dolphins they’d shared tanks with up to 20 years previously, as compared with those of dolphins they’d never met.

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SmithsonianMag.net