Freshwater stingrays chew their food just like a goat

A new University of Toronto study has found that some freshwater stingrays from the Amazon chew their food in a similar fashion as mammals. Using a combination of high-speed video and CT scans Matthew Kolmann, a recently graduated PhD in the lab of U of T Scarborough’s Nathan Lovejoy found that as the freshwater stingray Potamotrygon motoro eats it protrudes its jaws away from its skull, shearing from side to side in the process. “It’s pretty extraordinary when you think about it — here’s this bizarre-looking fish from the Amazon…

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