There are over 150 different species of firefly in North America, and each has its own ... Australia: The land down under From hopping kangaroo to beautiful reefs, we take a look at some of ...

Here are 15 of the largest animals in North America, where you'll find them, and anything else you need to know about them. Not all of them are land animals, either. You may be surprised at some ...

In North America, the wild horse is often labeled as a non-native, or even an exotic species, by most federal or state agencies dealing with wildlife management, such as the National Park Service, US ...

After the demise of the dinosaurs following an asteroid strike 66 million years ago, mammals became Earth's dominant land ...

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.

In prehistoric North America, the short-faced bear (Arctodus simus) ruled the land. It was one of the biggest ... there was great excitement over what extinct animal it could have belonged to.

Even the tadpoles of this species can reach 6.75 inches in length. They are among the most wide-ranging of all North American amphibians ... aggressively guard their land. Females are slightly ...

That’s according to a study published Monday in the Proceedings of the National Academy of Sciences (PNAS), which suggests iguanas traveled from North America ... light on how species are ...