Towering 13 feet tall and weighing a hefty 7 tons, the African elephant is the biggest land mammal on Earth. But that wasn't always the case. Tens of millions of years ago, shortly after the ...

In western North America during the twilight of the dinosaur age, the unquestioned ruler was Tyrannosaurus rex, one of the ...

The playful North American river otter is equally at home in the water and on land. It makes its home in a burrow near the water's edge, and can thrive in river, lake, swamp, or estuary ecosystems.

devoted explicitly for a species’ reintroduction to its former habitat. Other preserves would follow­, other national parks would reintroduce bison within their boundaries, and the American ...

The American black bear is a medium-sized bear native to North America. It is the continent’s smallest and most widely distributed bear species. Black bears are omnivores with their diets ...

Their dream came spectacularly true on that momentous day in 1974. The Lucy fossil preserved skull fragments and a lower jaw ...

Doll's eyes is a self-seeding perennial that has less than 10 seeds in each berry. The seeds will germinate the year after ...

S. & Ripple, W. J. Range contractions of North American carnivores and ungulates. BioScience 54, 123–138 (2004). Paine, R. T. Food web complexity and species diversity. American Naturalist 100 ...

A new species of tyrannosaur that stalked North America around 80 million years ago has been discovered by scientists in Canada. The dinosaur lived in the late Cretaceous Period, making it the ...

Inspired by a classic movie, conservationists are teaching endangered Northern Bald Ibises to fly south for the winter ...

A new report published by the World Wildlife Fund found that global wildlife populations have dropped a catastrophic 73 ...

Two types of mammoths roamed North America. Both are members of the proboscidean family, which also includes modern elephants, and stem from a species that evolved in Africa 5 million years ago.