The result is that many modern breeds suffer from ailments that dog lovers never would have deliberately selected for.

The dog breeds that love their humans more than life itself have been revealed - with three breeds in particular grabbing the top spots. Pet lovers will be in their element as their pooches among ...

A recent study using 3D skull analysis found no evidence that dog breeds bred for bite or scent work have specialized skull ...

thanks to humans. By identifying specific traits — such as size, coat color, and demeanor — and allowing only those animals to mate, we've created at least 167 different "breeds," or groups of ...

Study finds a poodle, Irish wolfhound, Labrador and Border Collie all have the same shaped skull, with size being the only ...

"In the past 200 years, humans have created hundreds of dog breeds that look really different and are pretty specialized at ...

See what scientists believe about humans' artificial selection pressures ... In fact, the evolution of the majority of dog breeds is a relatively recent phenomenon, beginning with selective ...

Tom Howarth is a Newsweek reporter based in Bristol, U.K. His focus is reporting on nature and science. He covers climate change, biodiversity, extreme weather, zoonotic diseases and more.

Learn about a new study that challenges whether dog breeds are truly specialized for tasks based on skull shape, suggesting behavior matters more than morphology.