Life, even an entity as seemingly simple as a frog egg, is flexible. It has options. At five days or so, red-eyed tree frog eggs, developing right on schedule, can suddenly take a different path if ...

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.

For spotted salamander embryos nearing hatching, they get by with a little help – not from friends, but from animals that are actually their predators. Voracious frog tadpoles chew on the egg masses, ...

Early spring frogs begin mating calls almost as soon as they wake from hibernation. Frogs spend the Northland winter either in the mud under the pond or buried under leaves on land. Regardless of ...