This towering Great Dane and his pint-sized Chihuahua brother may be two wildly different dogs, but they have formed an ...

Do purebred cats exist, or is the terminology used to describe cats not mixed with other breeds incorrect? Our expert weighs ...

The weirdest-looking moths on Earth are so strange, they look like they flew straight out of a vivid dream — or a nightmare.

While maybe not quite as well-known as its famous neighbor Yellowstone, Grand Teton National Park attracts several million ...

Some experts believe that we're already in a sixth mass extinction event, but given the numbers, others aren't so sure.

A paleontologist explains the latest science about Troodon formosus, and whether it was really the smartest dinosaur.

When people imagine the king cobra, they usually think of its hooded neck, its upright stance, and its potential to kill with ...

The United States is fortunate to contain numerous rivers teeming with life – including fish, amphibians, birds, mammals and ...

As one of the northernmost states, Maine experiences some of the harshest winters in the country. Northern Maine sees temperatures that routinely dip below freezing at night, while southern Maine ...