KAREN M WARKENTIN

(See K.L. Cohen et al., “How embryos escape from danger: the mechanism of rapid, plastic hatching in red-eyed treefrogs,” Journal of Experimental Biology, 2016.)

Correction (June 17): An earlier version of this article misidentified the reptile in this image as a parrot snake. It is a cat-eyed snake. The Scientist regrets the error.

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