In the animal kingdom, penises can be spiked, split, corkscrewed—even detachable. They're one of the most diverse structures ...

When it comes to animals romancing in the wild, things get weird—really weird. Some animals offer bizarre gifts, some put on ...

A new study uses sibling genetics to compare monogamy across species. Humans score higher than expected and sit close to ...

Michelle Spear does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

A much-hyped fashion show with wool from “gay rams” obscures the brutal reality of an industry that exploits sheep sexuality ...

Our animal kingdom is filled with talent; some animals are amazingly energetic and some are sophisticated performers. They have a good sense of rhythm and sometimes they surprise us as we humans ...

Like some other mammals, kangaroos have the propensity for deep emotions, including grief. We have more in common with them ...

Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, according to a new University ...

Strong competition for mates triggers dramatic changes in beetles, offering rare insight into the early stages of species ...

Rising heat and habitat loss force species to adapt. Learn how Asian elephants struggle to survive and the conservationists ...

Scientists continue to discover animals that seem almost too strange to be real. Even with shrinking habitats and climate pressures, new discoveries continue to emerge in rivers, forests, oceans, and ...

Monk parakeets ease into new friendships, slowly approaching strangers to avoid aggressive encounters. Researchers watched ...