The Amazon Rainforest is home to some of the most terrifying creatures on the planet. Known for its incredible biodiversity, the jungle also hides some of the deadliest and most dangerous monsters in ...

Let’s take a look at the most common animals in the stunning Amazon Rainforest. This post was updated on June 16, 2025 to include information on the newly discovered Ranitomeya aetherea.

These frogs, with their striking features and incredible adaptations, play vital roles in the ecosystem. From the tiny and agile squirrel monkeys to the mighty macaws and jaguars, the Amazon is a ...

World Rainforest creature with ‘heart-shaped’ tongue found in Ecuador. It’s a new species By Aspen Pflughoeft February 25, 2025 8:53 AM ...

Rainforest creature with ‘heart-shaped’ tongue found in Ecuador. It’s a new species By Aspen Pflughoeft February 25, 2025 9:53 AM ...

Correction 2/18/2025: A previous version of this article misspelled the name of the frog, "Currulao," and incorrectly omitted the name of researcher Juan Camilo Ríos Orjuela.

Golden line nurse frogs are most active during the day, and male frogs were heard calling, researchers said. The frogs were found in a “small patch” of rainforest, “which was very degraded ...

Above ground, black rain frogs — which are about 1.6 to 2 inches (4 to 5 centimeters) long — run or walk, rather than hop: "Their legs are very short, and their bodies round," Tarrant said.

The calling animal turned out to be a new species. A team of researchers set out to study the hourglass tree frog, a “small, brightly colored species” found in Central and South America.

When fleischmanni's glass frogs (Hyalinobatrachium fleishmanni) go to sleep, they siphon off 89 percent of their brightly colored red blood cells into crystal-lined sacs in their liver, which ...