News Animals Wasps drive frog eggs to (escape) hatch By Susan Milius February 3, 2004 at 5:52 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print Tree frog embryos plop out of their eggs in moments of danger, and now a researcher has found that their responses are proportional to the threat. A wasp lands on a clutch of red-eyed tree frog eggs too young to hatch. Warkentin That an embryo can respond at all to predators represents a recent rethinking of the powers of eggdom.