Sturdy Welsh terrier developed for hunting vermin, with a bold but steady nature.

Size Weight Height Lifespan
Small 20 - 25 lbs 10 - 11 inches 12 - 14 years
(These are estimates and may vary.)

Origin: United Kingdom



Own a Sealyham Terrier? Share what activities they enjoy to help other dog owners.

Running Digging Swimming Exploring Playing with Toys Obedience Training Tracking Herding Fetch Hiking Socializing Tug Of War Frisbee Chewing Agility Training Cuddling Guarding Hunting

Know a Sealyham Terrier? Share their personality traits to help other dog owners.

Clever Protective Affectionate Stubborn Confident Fearless Friendly Docile Energetic Calm Patient Aggressive Gentle Sociable Adaptable Playful Independent Clever Agile Loyal

May be a good fit if you:

  • Are looking for a breed that generally does well with children.
  • Want a dog that generally gets along well with other dogs.
  • Are a first-time dog owner looking for a relatively approachable breed.

The Sealyham Terrier was deliberately developed during the 19th century by Captain John Edwardes at his Sealyham estate in Pembrokeshire, Wales. Edwardes wanted a small but exceptionally tough terrier capable of working with his hunting dogs and tackling quarry such as foxes, badgers, and otters. The exact mixture of breeds he used was not carefully recorded, and later accounts propose several terriers and other small working dogs as contributors. What mattered to Edwardes was performance rather than pedigree. The resulting dogs were low enough to enter tight spaces but strong and determined enough for demanding work. Their predominantly white coats also helped hunters distinguish them from quarry. After Edwardes died in 1891, other breeders continued developing the type, and the Sealyham Terrier was recognized by Britain's Kennel Club in 1911. The breed later became surprisingly fashionable, particularly between the World Wars. Famous owners included members of the British royal family and Hollywood figures such as Alfred Hitchcock. That popularity eventually faded dramatically, and the Sealyham is now a relatively rare breed. Its calmer manner compared with some terriers can hide a history built around very serious hunting work.

Frequently Asked Questions About Sealyham Terrier

The Sealyham Terrier is not generally considered hypoallergenic. Individual allergy reactions can vary.

The Sealyham Terrier tends to shed relatively little, although coat care is still important.

The Sealyham Terrier generally needs a moderate amount of routine grooming.

The Sealyham Terrier is generally a high-energy breed that tends to enjoy an active routine.

The Sealyham Terrier generally benefits from a moderate amount of daily exercise.

The Sealyham Terrier has moderate trainability and generally benefits from patient, consistent training.

The Sealyham Terrier generally tends to do well with children when properly socialized and supervised.

The Sealyham Terrier generally tends to get along well with other dogs when properly socialized.

The Sealyham Terrier is generally considered relatively approachable for first-time dog owners.

The Sealyham Terrier generally tends to adapt well to apartment living when its exercise and enrichment needs are met.