This is WEEKEND EDITION from NPR News. I'm John Ydstie. There's a new trend in the pet world that has nothing to do with cockapoodles, ferrets or Siamese fighting fish. More and more people around the ...

Brightly colored but capable of dark deeds, poison frogs accumulate or generate toxic chemicals that are harmful to predators, but tolerable to the frogs themselves. For example, many poison frogs ...

In the forests of western Brazil, along the banks of a Juruá River tributary, researchers came upon more than a dozen tiny creatures, smaller than a nickel, flaunting bright colors that warned: “stay ...

Frogs are among nature’s most vibrant creatures, with some species displaying dazzling colours as warnings, camouflage, or mating signals. These brilliant hues are especially common in tropical frogs, ...

In the eyes of a female poison-dart frog, a red male isn't much brighter than a green one. This does not however mean that the mating behavior of the green and red variants of the same species of frog ...

If you're hanging out in Brazil's caatinga, a shrubland in the country's northeast, you may not want to mess with the frogs you find there. Two species of hylid frogs living in the region possess ...

It’s not often one hears the phrases “poison dart frog” and “family friendly” in the same description of an event, but the Bohart Museum of Entomology at U.C. Davis insists its upcoming open house ...