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

As mammals with large brains, humans experience smell as a powerful sensory experience that’s closely linked with memory. The smell of baking bread may take us back to a moment in Paris. A perfumy ...

Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...

Humans don’t have a defined mating season like deer or wolves. Here’s how evolution blended biology, culture and social life into year-round intimacy.

Humans are often described as “super-predators,” but wildlife may not respond to us as uniformly as once thought. People have ...

Advances in organ and computer models are raising the prospect that some animal experiments could be eliminated. But there ...

Actress Piper Curda, who voices the film's central character Mabel, and comedian Bobby Moynihan, who plays the beaver King ...

Humans have climbed to the top of the food chain by skillfully hunting, trapping, and fishing for other animals at scales that far exceed other predators, altering how the animals behave and earning ...

From an animal that’s not actually an animal, to the world’s only venomous primate, there are some unusual deadly animals in ...

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

The animal-loving team at Ginger Cat captures animals reuniting with humans in moments that melt hearts instantly. The Democrats who voted against the War Powers Resolution One type of drinking water ...

Animal testing, long used in science, is considered outdated, cruel and unnecessary. Every year, millions of animals are subjected to painful experiments in laboratories, often resulting in permanent ...