A new study tracing the evolution of same-sex sexual behavior in mammals, using phylogenetic analyses, suggests these behaviors may have evolved in part to strengthen social bonding and relationships.

During the first few years of the COVID-19 pandemic, the virus SARS-CoV-2 was detected in an increasing number of non-human ...

A new study evaluating the conservation status of 71,000 animal species has shown a huge disparity between “winners” and “losers.” Globally, 48% of species are decreasing, 49% remain stable, and just ...

A mining-machine test on the deep-ocean floor resulted in species diversity declining by roughly 32% in the tracks of the ...

A polar bear rests in a field on Barter Island in 2016. Polar bears in the Southern Beaufort Sea population are spending more time on land as sea ice diminishes, and studies indicate that they are ...

Research to help reduce inflammation in the uterus of livestock animals could help pave the way for developing new drugs to ...

The 550-million-year-old fossil Tribrachidium heraldicum is one of the most enigmatic critters from the Ediacaran. With its circular, three-lobe form, it doesn't resemble any modern organism. The ...

An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...

A recent study finds that color vision evolved in animals more than 100 million years before the emergence of colorful fruits and flowers. And there has been a dramatic explosion of color signals in ...

A certain white rabbit and his legendary drive for punctuality aside, scientists don't really know much about animals' sense of time. How aware of time are they? Do they apply past experiences to ...

Humans are captivated by the idea of finding life elsewhere in the universe – and even more by the idea that life, if found, ...

Gathering vision data for hundreds of vertebrates and invertebrates, biologists have deepened scientists' understanding of animal vision, including the colors they see. The researchers determined that ...