The phrase 'to swallow one's tongue' has been around since at least the 1880s and has been repurposed in several languages to mean everything from falling silent to a general feeling of fear. While it's anatomically impossible for a human to swallow their tongue, a new study shows that cane toads (Rhinella marina) achieve this feat each time they eat.
swallow prey using a complex pulley system of cartilage and muscle that travels so far down their throat, it butts up against their heart.
Naturalists as far back as 1827 were fascinated with amphibian eating habits. But frogs are lightning-fast at capturing and consuming prey—so fast that it's nearly impossible for the human eye to track their movements. It wasn't until the development of high-speed video in the mid-20th century that scientists were able to directly observe the wayEven then, scientists could only guess at how they swallowed their food.
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