Turtles, once considered deaf as stumps, turn out to be chatty. http://t.co/GxmLWRMb16

— carlzimmer (@carlzimmer) July 25, 2014

“While filming courtship behavior of false map turtles (Graptemys pseudogeographica) in captivity in the mid 1970s for part of my PhD thesis at the University of Wisconsin - Madison I noticed that the males were opening and closing their mouths while they were titillating the females with their vibrating foreclaws, and not trying to bite,” Vogt said.
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