State fish and game officials declared mountain lions in the Central Coast and Southern California threatened under the state ...

Project Hail Mary by Andy Weir is one of today's best science fiction books. While much of the science and math is great, it falls a bit when it comes to evolution.

Of nine different behavioral or fitness-related responses in 160 bird species examined, noise pollution had negative impacts on eight of them.

Thirty babies in a lifetime might sound unbelievable, but in the animal world, that number can be modest. Reproduction follows a clear biological pattern.

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

Across the United States, exotic animals are being exploited. Some organizations call themselves sanctuaries, but actually profit from animals that should never have been captured and are bred in ...

Across the natural world, some animals evolve traits so unusual they appear almost unnatural at first glance. These features often develop under intense environmental pressure where survival depends ...

Millions of years ago, some prehistoric otters grew far larger than any species alive today. Fossils of the giant otter Siamogale show a powerful predator with jaws capable of crushing hard shells and ...

Hence, many believe that balancing public safety, animal welfare, and legal requirements presents a major challenge for the ...

In Owyhee, the California bighorn sheep population has fallen to critical levels, prompting wildlife officials to relocate 30 ...

University of Michigan study finds noise harms birds' health in many ways, including their ability to reproduce ...

Baby dinosaurs weren’t coddled like lion cubs or elephant calves—they were more like prehistoric latchkey kids. New research ...