This video shows a red-eyed tree frog resting on a moss-covered branch inside a tropical rainforest in Costa Rica. The frog’s bright green body, red eyes, and orange feet stand out against the dark ...

Five-day-old red-eyed treefrog embryos are tightly curled inside dehydrated eggs packed closely together. It’s dry enough to make them begin to hatch early amid heating. Karen M. Warkentin As the frog ...