Alicia Malkinson-Gregori takes a trip to the Museum of Zoology, and reflects on our relationship with nature, past and ...

Evolutionary biologist Federico Degrange from Argentina's Center for Research in Earth Sciences and colleagues found the bird ...

Bears are incredible creatures, but they can also be some of the most dangerous animals on the planet. While even the most dangerous bear will typically avoid humans, under the right (or wrong!) ...

Biodiversity Heritage Library/Wikimedia Commons/CC BY 2.0 It is the sheer size of the megatherium that makes it scary. This giant ground sloth lived in South America until about 10,000 years ago ...

Awe-inducing creatures like mastodons, giant ground sloths, saber-toothed cats and even dire wolves ... with flat snouts full of razor-sharp teeth and a body size that can range up to 300 pounds. This ...

It has been known to science that the main pollinizer and carrier for Joshua trees is another species of giant ground sloth ... As a result, sloths consume much fewer leaves than an animal of similar ...

While past terror bird fossils placed the meat-eating birds at 3 to 9 feet tall, new findings suggest that some were even ...

The fossilized leg bone of the terror bird went unidentified for almost 20 years. Nearly 12 million years ago, the largest ...

Researchers including a Johns Hopkins University evolutionary biologist report they have analyzed a fossil of an extinct ...

This giant bird lived among primates, hoofed mammals, giant ground sloths and armadillo relatives, glyptodonts, that were the size of cars. Today, the seriema, a long-legged bird native to South ...