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 ...

Red-eyed tree frogs, Agalychnis callidryas, lay their eggs on foliage at the edge of ponds; when the tadpoles hatch, they fall into the water. Normally, an egg hatches six to seven days after it is ...

Warkentin, Karen M., Currie, Cameron Robert, and Rehner, Stephen A. 2001. "Egg-Killing Fungus Induces Early Hatching of Red-Eyed Tree Frog Eggs." Ecology, (10) 2860–2869.

A tree frog: female (larger individual below) laying eggs, which are protected by the 'foam nest' and male (smaller individual above). When it comes to laying eggs, tree frogs have some unusual habits ...

Boulenger’s backpack frog uses one of the strangest reproductive strategies in the amphibian world. Females carry fertilized ...