Mammals that live in groups may live longer, longevity research suggests Genetic analyses also suggest mammals’ social lives and life spans are evolutionarily linked ...

H5N1, an avian flu virus, has killed tens of thousands of marine mammals, and infiltrated American livestock for the first time. Scientists are working quickly to assess how it is evolving and how ...

A new article in Ecological and Evolutionary Physiology examines how the immune system and reproduction interact in female mammals, especially during pregnancy, from mating to birth.

Male mammals aren’t always bigger than females Biologists long assumed female mammals are usually smaller than males. That’s probably not true ...

Mammals have developed some unusual eating habits over the past 100 million years, but a new study has uncovered the surprising lengths to which some have gone to satisfy one of the more peculiar ...

No, birds are not mammals. Rather, they are avians. Mammals are characterized by their milk glands, hair, vertebrae and their birthing of live young (being viviparous), according to Britannica ...

Mammals are some of the most well-studied animals on the planet, but hundreds of unidentified species could still be hiding in plain sight.

An international team has reconstructed the genome organization of the earliest common ancestor of all mammals. The reconstructed ancestral genome could help in understanding the evolution of ...

Mass die-offs in marine mammals are accelerating, and climate change will only make it worse Warming seas and melting ice could create the perfect storm of conditions for disease transmission.