Scientists have finally managed to record the ear-piercing screams that a frog in the Amazon rainforest makes to defend against predators. It’s the first reported case of the use of ultrasound by an ...

DNA testing of two new-to-science frog species has shown they share a common ancestor — a species that lived 55 million years ago in the mountains of what is today Brazil’s Amazonas state. The ...

The frog scream varies between species. Some sound like shrill screeches, others like prolonged squeals or gasps. Unlike their melodic mating calls, screaming is usually jarring, sudden, and ...

A team of wildlife researchers from Instituto Nacional de Pesquisas da Amazônia, in Brazil, working with a colleague from the National Museum of the Czech Republic, has discovered a new species of ...