What is the scientific name for the domestic dog?

The scientific name for the domestic dog is Canis lupus familiaris, a subspecies name that places dogs within the gray wolf species.

The name reflects the close evolutionary relationship between dogs and wolves. Modern dogs descended from ancient wolf populations and were domesticated by human communities during the Late Pleistocene. Archaeological evidence places dog domestication at least 14,000 years ago, while genetic research suggests the process may have begun more than 25,000 years ago.

The classification is sometimes confusing because Canis familiaris is also used as an alternative scientific name. Older classifications treated the domestic dog as a separate species, while many modern taxonomists classify it as a subspecies of the gray wolf. Canis lupus is therefore the species name, and familiaris identifies the domestic-dog subspecies.

Dogs have since been selectively bred for behavior, appearance, sensory abilities, and working roles, producing enormous variation among breeds. A Chihuahua and a Great Dane can look dramatically different while remaining members of the same domestic species. Coyotes are excluded because their scientific name is Canis latrans.