Researchers trekking through a rugged Peruvian river basin found a never-before-seen species named Marmosa chachapoya.

"We know very little about this species, including its natural history and distribution ... The ancient Chachapoya people lived in northern Peru from about A.D. 800 until the arrival of the Incas in ...

Scientists have discovered a new species of poisonous frog—brightly colored and measuring just a few millimeters—in the ...

The newly discovered species is not only the smallest of its kind — it’s also linked to a unique habitat in the Amazon.

The brightly colored species had been misidentified in museum records and field observations since 1988, according to a study.

High in the Andes, a tiny surprise awaited scientists who had come to find an obscure species of squirrel. What they found ...

In 2018, a research expedition in Peru’s Río Abiseo National Park stumbled upon an animal no scientist had recorded before.

Scientists have discovered a new species of poisonous frog -- brightly colored and measuring just a few millimeters -- in the ...

A new species of poisonous frog has been discovered in the Peruvian Amazon. The tiny amphibian of bright color, called ...

A scientific expedition focused on conserving the known animals of Peru's Alto Mayo Landscape discovered 27 new species needing protection. In 2024, Conservation International's Rapid Assessment ...

As nighttime settled over the rainforest of northeastern Peru, a “dwarf”-like mammal moved through the tree branches and began climbing across an artificial bridge. Its passage set off a nearby trail ...

In this corner, weighing up to 190 metric tons, is the blue whale. This behemoth still swimming in Earth’s oceans is the current titleholder for the heaviest animal to ever exist — living or dead. And ...