but the team note that their paper is not the final word on biological sex and size. Having only been able to include 7% of mammals in their study, future research with more species might reveal ...

Birds are often imagined to be less intelligent than mammals, perhaps with the exception of crows and parrots. However, their brains are not as radically different as you might think.

How did those little creatures transform into not only the hippo and the mole rat but also today's vast panorama of mammals with fur, hooves, and fangs, as well as others that swim hairless ...

Marine mammals, but especially the larger, wide-ranging predators such as whales, dolphins, and polar bears, simply do not belong in captivity. The 6 th edition of The Case Against Marine Mammals in ...

Avian flu is not just for the birds; cases have been reported in the United States in dairy cows, as well as types of cats, a ...

This all indicates that these structures and circuits are not homologous ... atlas of the avian brain and compares it with those of mammals and reptiles. "We were able to describe the hundreds ...

But the mammals did not simply step into ecological roles vacated by the dinosaurs. It took several million years for the mammals to evolve even moderately large body sizes, and the world they ...