The glass frog’s unusual adaptation to bolster its camouflage could offer clues for preventing deadly blood clots in people. By Veronique Greenwood At first glance, you might miss the glass frog of ...

YOSEMITE — With no parting glance at their devoted human caretakers, 142 rare red-legged frogs swam to freedom on Friday — one small jump for the frogs but a giant leap for the threatened species. Our ...

Red-legged frogs made famous by Mark Twain are thriving in Yosemite Valley after a decades-long absence. Ecologists this spring found clusters of eggs in meadows and ponds, proof of the first breeding ...

A large coalition of federal, state and county agencies have joined forces to protect one tiny El Dorado County resident – a frog. The red legged frog, to be exact. In a meeting of the El Dorado ...

YOSEMITE NATIONAL PARK, Calif. (AP) — Red-legged frogs made famous by Mark Twain are thriving in Yosemite Valley after a decades-long absence. Ecologists this spring found clusters of eggs in meadows ...

The threatened California red-legged frog population had been flourishing in the Santa Monica Mountains. Then the Woolsey Fire struck and burned much of the rare amphibians’ surrounding habitat, ...

ANGELS CAMP, Calif. — When Mark Twain published “The Celebrated Jumping Frog of Calaveras County” in 1865, the frog helped make him famous, and he returned the favor. Since then, the frog has made the ...

It is frog heaven, this lovely oasis of quiet pools along Las Virgenes Creek on Ahmanson Ranch. Lush brambles of wild blackberry border the creek, creating perfect hideaways. Tender patches of ...

Red-eyed tree frog. Photo by Rhett Butler (2011). The red-eyed tree frog (Agalychnis callidryas) is one of the most colorful and best-known tree frogs (it is often used in advertisements). The ...