Whippet

About the breed

The Whippet is a slender, medium-sized sighthound of English origin, bred for fast running after prey and an artificial lure. Its lean, muscular body with a deep chest and long legs is essentially a smaller, lighter version of the Greyhound - built purely for acceleration and speed over short distances. Despite a competitive past on tracks and fields, the Whippet today is primarily a gentle family companion, equally happy sprinting across a field as curled up under a blanket. Its character combines two extremes - explosive energy outdoors and remarkable calm at home - which makes it one of the most popular sighthounds for family life.

Origins in northern England's working-class communities

The breed took shape in the 19th century in the industrial areas of northern England, among mining and mill working-class communities who could not afford expensive Greyhounds. By crossing Greyhounds with terriers, they produced a smaller, cheaper 'poor man's racehorse,' suited to rabbit coursing and a popular Sunday pastime known as 'rag racing,' in which a dog sprinted toward its owner, who waved a rag to lure it home at the finish. This working-class tradition is thought to be the source of the breed's name. The Kennel Club (UK) officially recognized the Whippet in 1891, and the American Kennel Club as early as 1888, after English immigrants brought the breed to the United States.

The world's second-fastest dog

The Whippet is considered the second-fastest dog breed in the world, right behind the Greyhound, reaching competition speeds of roughly 56 km/h (35 mph). At the AKC's official 'Fastest Dogs USA' event in 2024, Whippets were clocked at around 35 mph and were the fastest breed on the field that day, outrunning every other participating breed, Greyhounds included. This explosive speed comes from a flexible spine, long limbs, and deep lungs adapted for a short, powerful sprint rather than distance endurance. Today that natural ability lives on mainly through lure coursing and racing trials, where the dog chases an artificial lure along a set course, with none of the risks of live hunting.

The 45 mph couch potato

Among sighthound fanciers, Whippets are known for the paradox captured in the phrase '45 mph couch potato' - a dog capable of sprinting at nearly 70 km/h yet one of the calmest companions at home. When there is no opportunity to chase or play, a Whippet would rather lie curled up, often tucked under a blanket, saving its energy for the next burst of activity. This trait is shared by sighthounds generally and stems from their role as sight-hunters: short, intense efforts followed by long rest.

The genetics of double muscling

In 2007, researchers publishing in PLoS Genetics identified a mutation in the myostatin (MSTN) gene, a natural brake on muscle growth, in racing Whippets. Dogs carrying a single copy of the mutant allele had on average about 17% more muscle mass relative to height and were statistically faster racers. Dogs that inherit two copies of the mutation develop extreme muscling - informally called 'bully Whippets' - with broad chests and heavily developed leg and neck muscles that go beyond what is useful for speed. It is one of the rare cases where the genetic basis of athletic performance in dogs has been precisely described scientifically.

Health and cold sensitivity

A thin, close-lying coat and an extremely low body-fat percentage (in sighthounds sometimes only around 17% of body mass, versus about 35% in an average dog) mean the Whippet is genuinely sensitive to cold and needs a coat during cold or wet months. The same trait underlies the well-documented anesthesia sensitivity seen in sighthounds: with little fat tissue and reduced liver enzyme activity, certain drugs (especially thiobarbiturates) clear from the body more slowly, so veterinarians generally prefer propofol, ketamine, or etomidate for Whippets and provide extra warming after procedures.

Care and training

The short coat needs only occasional brushing and bathing, placing the Whippet among the lowest-maintenance breeds for grooming. It still needs a daily chance to run in a securely fenced area, since its prey drive takes over quickly at the sight of a fast-moving object - off-leash recall cannot be relied upon. Whippets respond well to gentle, consistent, reward-based training; harsh or forceful methods quickly damage their sensitive nature. Early socialization with dogs of different sizes is recommended, since a Whippet's speed and slight build mean it can unintentionally injure a smaller dog during play, or be startled by overly rough play itself.

Suitability for families

Thanks to its gentle, non-aggressive character and quiet nature, the Whippet is often recommended for families, though children must learn to handle it respectfully, since its lean frame is not built for rough play. Its strong prey drive makes it unreliable around small pets (rodents, birds, sometimes cats), while it generally gets along well with other dogs, especially if raised together. For a completely inexperienced owner, managing the prey drive and cold sensitivity can be a real challenge, so suitability for beginners is conditional rather than clear-cut.

Pros & cons