New research has dramatically expanded the known roster of mammals on Earth. A new review published in the Journal of Mammalogy shows that the number of living mammal species has surged to nearly ...

A spherical sea sponge discovered in Antarctica, Carnivorous cladorhizid, is a carnivore, trapping and devouring live animals ...

Mammals only have one life to live, but the length of that life varies greatly. While some shrews shuffle off this mortal coil in less than 14 months, bowhead whales can swim in Arctic waters for more ...

From expert diggers to desert burrowers, here are 10 fascinating mammals that spend their lives below the surface. Learn what makes them unique.

Sexual behavior is one reason why female mammals typically live longer than their male counterparts, according to a new study. Researchers from Germany, Denmark, France, Hungary and Belgium analyzed ...

According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ago. It weighed a few ounces and ...

Scientists found an unexpected aging pattern in a mostly intact juvenile mammal skeleton from the paleontological period. By Jack Tamisiea Small mammals often live fast and die young. Rodents and ...