Yahoo News (USA) June 20th, 2016 10:14 AM: Frog Embryos Speed-Hatch to Escape Danger
A developing frog embryo in its jelly-like egg mass can be quite the escape artist: When predators come calling, the red-eyed tree frog embryo can detect the threat and drop out of its egg to safety in a matter of seconds, even though it normally wouldn't be ready to hatch for several more days. Karen Warkentin, study co-author and a biology professor at Boston University, reported the unusual behavior in red-eyed tree frog embryos in an earlier study published in 2005 in the journal Animal Behavior. Warkentin recorded the embryos' responses to different types of vibrations.
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