Some harlequin frogs have lost their poison—and their ability to defend themselves. Scientists are on the case.

Florida is often called the state with the most invasive animals, and a few of those are frogs and toads that have settled into its warm climate. With its abundant wetlands, forests, rivers, and ...

In a shocking and intriguing discovery, two new species of poison dart frogs have been identified by scientists in the remote Brazilian Amazon, highlighting how little is truly known about the ...

Scientists have discovered a new species of poisonous frog—brightly colored and measuring just a few millimeters—in the Amazon, according to a Peruvian government agency in charge of environmental ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A new species of poison dart frog has been discovered in the heart of ...

Researchers discovered that a poison frog species described decades ago was based on a mix-up involving the wrong museum specimen. The frog tied to the official species name turned out to be brown, ...