The warming world has disrupted the timing for plant and animal reproduction, and it's usually bad news for species that ...

Here are 10 animals that have some of the highest levels of testosterone and the impact it has on their behavior and characteristics.

King penguins are adapting to climate change in a way that seems to help them breed successfully, which is unusual.

The natural world has some pretty brutal gaps when it comes to how much time different species get. While a […] ...

What happens when a wild animal stops seeing people as something to avoid? Backyard wildlife rescue often begins with ...

Amazon mollies don't need a man, and never will. A new study finds they can purge and repair genetic mutations that would otherwise plague a self-cloning species.

Including rare species of birds such as boat-billed herons, black-faced ibises and tawny frogmouths; zoo visitors can also see giant otters, Amur tigers, Malayan bears, giant pandas, and many other ...

As famous as movie stars and global leaders are a bunch of animal celebs that the world grew to positively adore.

In the deep ocean, where sunlight never reaches, and food drifts down like confetti, survival is less about speed and more about strategy. Take, for example, the tripod fish, a creature that can swim ...

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