A newly described poison dart frog, which is about the size of a thumbnail, has been found in the forests of the Juruá river basin in Brazil ...

In a situation familiar to female members of many species, female frogs' calls are rarely heard and, as a result, seldom ...

In the forests of western Brazil, along the banks of a Juruá River ... They were poison dart frogs, and they were unlike any others the expedition team had seen before. Jet back with metallic ...

The tiny amphibian, observed in a remote area of the Brazilian Amazon, is the first such discovery in a decade.