How Houdini tadpoles escape certain death
Chemicals probably trigger a three-stage emergency early hatching process
![snake eating embryos](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/07/080616_scivis_main_free.jpg?fit=860%2C460&ssl=1)
RUN AWAY When predatory snakes take a bite out of clusters of unhatched red-eyed tree frog embryos, some manage to escape the slaughter by wriggling out of their eggs to safety.
Karen M. Warkentin