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Ghost Crabs Use Teeth in Their Stomachs to Growl at Predators

Scripps Institution of Oceanography researchers found Atlantic ghost crabs use teeth in their stomachs to growl during aggressive interactions. They say it's the first evidence of an animal using stomach sounds to communicate.
Published: 11:56 AM EDT September 11, 2019
Updated: 11:15 AM EDT September 11, 2019