Invasive species are a growing problem across the globe.

A strange spiny frog with a bright red belly has been discovered in the Ecuadorian Andes, baffling scientists.

It may resemble a cross between some sort of bizarre alien plant and a funky Christmas decoration, but this is neither. This ...

Emerging in early spring from hibernacula on dry land, the males are invariably the first to arrive at the breeding sites, ...

Discover 15 endangered species that haven't changed since the age of dinosaurs. See the rare photos of nature's survivors.

A newly discovered frog in Ecuador’s El Quimi Nature Reserve has been named the Dajomes glassfrog, honouring Olympic ...

Some animals are so unusual that they barely look real, and transparent creatures are among the strangest of them all. These ...

The golden poison dart frog may be tiny, but it has earned a formidable reputation in the animal kingdom. Native to a small ...

The marsupial frog and Wollumbin hip-pocket frog are the only two Australian frog species known to show parental care. And ...

For nearly two centuries, a small brown frog living in Southeast Asian rainforests was considered a single, well-understood species. It had a name. It had a place in the textbooks. Case closed. Then ...

A small brown frog from the rainforests of Borneo is forcing scientists to rethink one of biology’s most basic questions: what counts as a species? For nearly two centuries, a group of fanged frogs in ...

When a new species is discovered, it's tempting to imagine an adventure novel, said Chan Kin Onn of Michigan State University. "Most people have this image of an intrepid explorer braving an isolated ...