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

Scientists suggest female frogs listen for changes in the male calls as a signal for when it's warm enough to mate.

Animals are noisy. And their noises can travel a long way. But making sounds can be a double-edged sword: it can help them communicate, sometimes over long distances, but it can also reveal them to ...

From shorebirds flying between their Arctic breeding grounds and southerly foraging ranges to freshwater fish returning to native spawning streams, migratory animals are struggling. About half of all ...

For the first time in a century, a wolf has appeared in Los Angeles County, according to the Los Angeles Times. The wolf, ...

The experiment began with a straightforward prediction: microbes from older mice would age young ovaries. But when the ...

Hoppers is as chaotic as it is delightful. The latest animated comedy from Disney and Pixar, the movie centers on 19-year-old Mabel, who transfers—or “hops”—her consciousness into a robot beaver’s ...

You might have a love-hate relationship with daylight saving time, but research shows that urban wildlife may stand to benefit ...

Scientists discover hedgehogs hear ultrasound, opening the possibility of warning sounds that keep them away from roads.

Later it was extended to include close friends or companions who gathered to talk, tell stories, and share news about the community. It is only relatively recently that the word gossip took on the ...

From purring to the zoomies, almost all of your cat's quirky behaviors have logical explanations.