She pulls on a broad green leaf still attached to a branch and points out a shiny clutch of jellylike eggs. “These guys are hatchable,” she says. Red-eyed tree frogs, Agalychnis callidryas ...

Camouflage takes many forms in the natural world. Some animals are born with skin or coats that blend in naturally with their environment. Some Old World lizards like the chameleon have an almost ...

After the females of some species of glass frogs lay their sticky eggs on the undersides of leaves that dangle above flowing water, the males guard the fertilized eggs from hungry insects ...

With jaunty peaks sticking up from its eyelids that may help it camouflage as a dry leaf, the horned marsupial ... Instead of laying thousands of eggs in water, like most frogs, female horned ...