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.

Slugs are sluggish but one of the more fascinating creatures in existence. Learn 10 slippery facts about these gastropods.

The North Carolina Zoo announced the death of its remaining ocelot, Inca. “Inca lived a long, full life filled with love and enriching experiences thanks to the extraordinary care she received from ...

After Pittsburgh’s spay-and-neuter program went dark for more than a year, kitten season came back with a vengeance.

Due to its vast size — stretching from Canada and Greenland in the north, to Mexico in the south — North America contains a vast range of habitats. From land to sea, there are forests, mountains, ...

It's often easy to forget that wild animals occupied the land we live on well before humans started putting up houses. And ...

This week, Texas advanced plans to build a new sterile fly production facility, an integral part of the government’s strategy to keep the New World Screwworm from devastating the state’s ...

In a German-U.S. collaboration with the participation of the European Neuroscience Institute Göttingen (ENI-G), researchers have shown that fruit flies can adapt their social behavior and learn from ...

NASHVILLE, Tenn. (WSMV) - The Nashville Zoo on Saturday announced its latest animal additions — twin serval cats named after two key historical leaders that helped shape the U.S. The cats, named ...

Every mating season, penguins carefully search for the perfect smooth stone. They offer it as a symbolic gift that strengthens pair bonds, helps build nests, and signals commitment in the wild.