Advances in organ and computer models are raising the prospect that some animal experiments could be eliminated. But there ...

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.

Scientists at MIT have found compelling chemical evidence that Earth’s earliest animals were likely ancient sea sponges.

Climate change has a wide range of effects on wildlife. It affects seasonal migration, reproduction times, body size and mass, and disrupts ecological processes, thereby posing challenges for the ...

A new UCLA Health study published in Nature uncovered the brain circuitry in mice linking two seemingly distinct social behaviors: caring for vulnerable offspring and comforting distressed peers.

Never underestimate the mind of a crow. Members of a family of birds that includes ravens, rooks, magpies, and jays, crows have been known to bend wire into hooks to retrieve food; drop nuts in a road ...

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 ...

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 ...

During the first few years of the COVID-19 pandemic, the virus SARS-CoV-2 was detected in an increasing number of non-human animal species. This included many wild animal species as well as domestic ...

A multidisciplinary research team recommends combining detailed data on human activities, infrastructure and animal ecosystems into a “dynamic human footprint” framework. The study explores the ...

Our analysis showed that temporal perception has even greater variation than scientists may have realised. Our perceptual ...