A new study from the Smithsonian Tropical Research Institute (STRI) shows that red-eyed treefrog embryos hatch early when exposed to high ammonia levels — an environmental cue that it’s too hot and ...

Red-eyed tree frogs rely on a unique blend of color and stillness to disappear into rainforest foliage. When resting, their bright markings fold away, creating a perfect leaf-like disguise. Predators ...

While the bright coloration of this red-eyed tree frog doesn’t make the amphibious creature see red, it does provide an eye-catching display for humans who glimpse it in its rainforest habitat. In ...

Warkentin, Karen M. 2005. "How Do Embryos Assess Risk? Vibrational Cues in Predator-Induced Hatching of Red-Eyed Treefrogs." Animal Behaviour, (1) 59–71.

Years ago, scientists moved eggs of a federally threatened frog from Mexico to Southern California. Audio monitoring — with an AI assist — now shows the complicated conservation effort is working. Put ...