Fertilization is often imagined as a frantic race, with millions of sperm competing for a single prize. But new research by a team of evolutionary biologists from Syracuse University, the University ...

Scientists who study cat behavior call this distinctive paw action “kneading” and believe it to be a sign of a relaxed cat.

Bulgaria's newly described ant species is notable not just as another addition to a checklist. Researchers say it may help clarify an unusual European ant group in which insects that look alike can ...

Unlike dogs, cats aren’t obligate social species, therefore may not have such a strong proclivity to form social attachments.

A man's body fat percentage may be a better indicator of his reproductive health than body mass index (BMI), according to a ...

The nine-banded armadillo — whose name translates from Spanish as “little armored one” — can be found in every county ...

Theory and Experiment (JSTAT), inspired by the behavior of bacterial colonies observed in previous experiments, uses mathematical models to describe the expansion of competing populations. The aim is ...

Male fertility after 35 may gradually change, with shifts in sperm quality, hormone levels, and overall reproductive health.

Fertilization is often imagined as a frantic race, with millions of sperm competing for a single prize. But new research by a team of evolutionary ...

And yet, despite the bounty of possibility, we are living through a great romance slump. Romance is a broad term, of course.

Arctic wolf packs exhibit cooperative pup-rearing behaviors beyond simple family loyalty. Older siblings and other adults ...

Biologists at the Smithsonian Tropical Research Institute investigated a flexible social bee species, which helps shed light ...