Our best friends come in a fantastic array of shapes and sizes; a Borzoi looks nothing like a Boston terrier, except for a certain fundamental, ineffable (except to taxonomists) doggyness about them.

Researchers studying thousands of canine genomes discovered that wolf DNA is still present in most dog breeds. This ancient genetic influence shows up in traits like body size, behavior, and ...

The staggering array of modern dog breeds is typically traced to the Victorian era. But half of all canine variation was in place roughly 10,000 years ago, a new study suggests. By Emily Anthes As a ...

Imagine a time thousands of years ago when wild wolves roamed near human camps, their eyes gleaming in the firelight. These fierce hunters would eventually become our loyal companions, transforming ...

Modern wolves and dogs both descend from an ancient wolf population that lived alongside woolly mammoths and cave bears. Iza Lyson/500px Prime via Getty Images Dogs were the first of any species that ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...