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 Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to 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.