This one-ton turtle once ruled South America’s rivers — until a changing planet proved too much for even the largest ...

Throughout the history of life on Earth, some species have evolved to incredible sizes. Animals today can reach enormous sizes, such as the biggest polar bear found in the U.S., which outsized the ...

Snapping turtles are large freshwater turtles that are unable to withdraw their head and legs fully into their shells, and so have extremely powerful jaws that they use to defend themselves with by ...

The giant South American river turtle, also known as the Arrau turtle, is a threatened species native to freshwater lakes and rivers in the rivers and lakes in the Amazon and Orinoco basins. “We ...

The leatherback sea turtle (Dermochelys coriacea) is the largest living sea turtle in the world — and also one of the most threatened. According to the IUCN Red List of Threatened Species, the global ...