Cougars may actually recolonize the middle part of the United States within the next 25 years.
Scientists may just have uncovered the largest rat in history. They've found the fossils of seven giant rat species on East Timor, with the largest up to 10 times the size of modern rats.
Scientists have found that about 550 million years ago, tiny marine creatures had complex skeletons, which suggests that the earliest complex animals lived millions of years earlier than previously known.
Researchers have uncovered two new species of aquatic, carnivorous amphibians from 278 million years ago. This discovery led to new information about the spread of life on earth.
Animals, such as cows, can produce enough methane to impact our Earth's atmosphere. Now, researchers have found that another animal may do the same: the kangaroo.
A fossil sea urchin is actually the oldest ever found. In fact, it pushes back a fork in its family tree by a staggering 10 million years.
Illegal pot farms may just be harming the rare, forest-dwelling fisher. Scientists have found that illegal marijuana farms in California are threatening this species.
How does a cowbird know it's a cowbird? These birds are actually laid in the nest of different birds. Now, scientists are looking at how cowbirds know they're not a warbler, thrush or sparrow.
There's a reason they call dogs "man's best friend." They're loyal and not to mention they're adorable. And now, you can add lowering your asthma risk to the list, too.
What’s an electric eel’s secret weapon? It’s curling up.
It's a tyrannosaur eat tyrannosaur world when it comes to dinosaurs. Scientists have found a tyrannosaur bone that has peculiar teeth marks that strong suggest it was gnawed by another tyrannosaur.