Previous research indicated that kangaroos weighing more than about 350 pounds would rupture their ankle tendons if they tried to hop. The largest of the Ice Age kangaroos, Procoptodon goliah, which ...

At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

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About 14,400 years ago, a weeks-old wolf puppy ate its last meal - meat from a woolly rhinoceros - shortly before dying on the harsh Ice Age landscape of northeastern Siberia.

For the Smithsonian National Zoo and Conservation Biology Institute (NZCBI), Christmas came early in 2025. Zookeepers were delighted to welcome two new arrivals—sloth bear cubs, born in an off-exhibit ...

Most of the large animals that have walked the surface of Earth are no longer here. Why? Dan Mann thinks it’s because our recent climate has been too stable, at least when compared to the wacky ups ...

Talk about ending the year on a high note.The Smithsonian’s National Zoo closed out 2025 with a rare double dose of good news, welcoming two sloth bear cubs for the first time in more than a ...

For a long time, the end of the Ice Age felt like a slow fading rather than a sharp break. Mammoths vanished. Old ways of living disappeared. The clim.

The two cubs in their indoor den Smithsonian’s National Zoo and Conservation Biology Institute Two sloth bear cubs were born at the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI ...

The 7,500-square-foot space will house more than 40 sloths — and is set to open in February Ingrid Vasquez is a Digital News Writer at PEOPLE. She graduated from The University of Texas at Austin with ...

While conservation efforts have bolstered the populations of many species considered to be threatened in 2025, many animal and plant species continue to dwindle in number, with some even going extinct ...