A deadly fungal disease has wiped out dozens of frog species worldwide. But new research on disease-resistant frogs in Yosemite National Park could help bring other species back from the brink.

It's important to know which tadpole becomes which frog, he explained. "It helps us detect the presence of a species, especially as adult frogs can be seasonally active and difficult to find ...

Often starting life as a tadpole eating algae, before morphing into a carnivorous adult, frogs carry energy from aquatic ecosystems onto land — where it can be transferred throughout the food web.

DESCRIPTION: The relict leopard frog is a small, spotted frog with an adult body length of 1.75 to 3.5 inches. The dorsal color is brown, gray, or greenish with greenish-brown spots. A glandular dorso ...

Still, the population is teetering on the brink of extinction. Frogs have subsequently disappeared from two of the rediscovered localities and only about 500 to 1,100 adult frogs remain, half at a ...