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

Deep in the tropical forests of Colombia, you come across a small, beautiful frog. You’re captivated by its brilliant color and reach out to hold it in your hand. Within seconds, your hand starts to ...

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, ...

Poison frogs living just a few miles apart along a Colombian river sound nothing alike, and the reason goes far beyond body ...

This newly discovered poison frog may represent an evolutionary step on the pathway towards developing brilliant warning coloration associated with other poison dart frogs. A small reddish-brown frog ...

All it takes is one miserable night after a bad dinner or drink to make humans avoid an ingredient for life. To teach freshwater crocodiles in Australia to avoid a lethally poisonous toad, all it ...

Modern toads (Bufonidae) are among the most successful amphibians on the planet, a diverse group of more than 600 species that are found on every continent except Antarctica. But just how did they ...

Forbes contributors publish independent expert analyses and insights. GrrlScientist writes about evolution, ecology, behavior and health. This voice experience is generated by AI. Learn more. This ...

Cane toads, large and poisonous invasive amphibians, pose a threat to Floridian pets, particularly during the rainy season.