Ecologists are asking islanders to help track small mammals through a new citizen science project called Garden Paws.

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.

New research is cutting male mammals down to size. While we may think of hulking elephant seal bulls or huge stags, these males appear to be the exception, rather than the rule. A new analysis of more ...

A team led by an Ohio State University professor analyzed over 4,000 mammal species to identify which animals are likely to have a hidden species. Some yet-to-be-discovered species are likely small ...

We can study animals from all over the world thanks to science, but what about those that no longer exist? The list of extinct mammals could go on for ages, but each animal has a unique story. With ...

There is a limit on how many times a mammal can be cloned before suffering "mutational meltdown", Japanese scientists have discovered, after making 1,200 clones over two decades that started off with ...

Zebra stripes? Leopard print? Neither were in vogue among the earliest mammals during the Age of Dinosaurs. Early mammals and their close relatives probably sported dark, drab coats from snout to tail ...

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Why did our ancestors ditch the shell and start growing babies inside their bodies instead? In this episode of Big Ideas, from the team behind Deep Look, Niba zooms out to explore one of evolution’s ...

Mammal evolution has been flipped on its head, according to new research that suggests marsupials are the more evolved mammals. By estimating how the common ancestor of mammals reproduced and ...

Why do so few mammals go through menopause? Menopause happens when the older females of a species remain physically capable ...