Now you see them, now you don’t. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. Some frogs found in South and Central America have the rare ...

Australia’s scarlet-sided pobblebonk frog thrives in waters so acidic they should be deadly, with its tadpoles tolerating water with a pH within the range of human stomach acid. This may be thanks to ...

Audio will be available later today. The male tree-hole frog is a one-inch-long fellow that lives in the rainforests of the southeast Asian island of Borneo. He's not much on brainpower, but he's ...