This behavior may seem alternately adorable and strange to us, but dogs have very good reasons why they chase their tails There are few things cuter than watching your dog discover its marvelous tail ...

A mutation in a gene called TBXT may be behind the loss of great apes' tails, according to a new study. Jabid Ishtiaque via Flickr under CC BY-NC-ND 2.0 Our primate ancestors used their tails for ...

Some 25 million years ago, a small, chance mutation dramatically altered the course of primate history. And it's a major reason you don't have a long muscular appendage protruding from your lower back ...

Some hold with the theory that the development of an embryo shows the stages of evolution. In other words, what first develops is fishlike, and then like a small mammal, and then like a lemur or ape, ...

WASHINGTON — Our very ancient animal ancestors had tails. Why don’t we? Somewhere around 20 million or 25 million years ago, when apes diverged from monkeys, our branch of the tree of life shed tails.

Tails might look like nature’s afterthought but for many animals, they’re multitasking power tools. Whether it’s balancing, fighting, flirting, or escaping predators, tails do way more than just wag.

Tyler Lacoma has spent more than 10 years testing tech and studying the latest web tool to help keep readers current. He's here for you when you need a how-to guide, explainer, review, or list of the ...

Fluffy, curly, short or stumpy, tails are an adorable feature of our furry friends. But if not for human amusement, why do dogs have tails? A vet explains. Nothing makes me feel quite as happy and ...

Dogs use their tails to communicate. Eastimages/Moment via Getty Images Whether they belong to reptiles, insects, birds or mammals, tails serve a wide variety of purposes. Modern animals use their ...