All About the Breed Sealyham Terrier

Have you recently fallen for the Sealyham Terrier or do you simply love rare breeds? Learn all about the breed here, including: Breed History, Personality Traits, Train-ability, Benefits and Disadvantages of the Breed, and Common Health Concerns.

The Sealyham Terrier is a loyal, outgoing, and enthusiastic breed.

But how do you know whether you are ready to purchase a pet and if this breed is right for you?

This information is absolutely necessary in making the decision to purchase a pet.


The origin of the Sealyham Terrier can be traced back to mid 19th century Sealyham, Haverfordwest, Wales, when a man named Captain John Edwardes began experimenting with various breeds in hopes of creating a superior small game hunting dog.

While the ancestors of the Sealyham Terrier remain unknown, enthusiasts believe the breed to have descended from various wild Terrier breeds, though this has never been proven scientifically or otherwise.

Throughout its history, the Sealyham Terrier has been most commonly used for hunting small game such as badger, otter, and fox, proving its outgoing and fearless work ethic.

The Sealyham Terrier was recognized by the American Kennel Club in 1911, and the American Sealyham Terrier Club was established two years later.

Today, while the Sealyham Terrier has earned an underground popularity as a companion dog, the breed remains rather rare outside of Europe.

Personality Traits

Best known for its spunky and feisty nature, the Sealyham Terrier is full of character. This breed is highly intelligent and easily trainable. These dogs thrive on strong and dependable relationships with humans. As a pet, the Sealyham Terrier is loving, loyal, obedient, and affectionate. The Sealyham Terrier is very active and enjoys time outdoors and playing games such as fetch.


Due to its need for human relationships and eagerness to please and impress its owner, the Sealyham Terrier generally responds well to basic training and commands. These bright dogs have the ability to learn to perform most any task its trainer is willing to take the time to teach.

Establishing immediate trust and respect is key to successfully training the Sealyham Terrier. This breed responds best to a stern yet gentle approach, positive reinforcement, and reward-based training.

Benefits and Disadvantages of the Breed

There are many benefits to owning a Sealyham Terrier. These active dogs are often quite entertaining to watch when at play. The Sealyham Terrier is highly intelligent and is capable of learning to perform many impressive tricks and tasks. When properly socialized from a young age, the Sealyham Terrier gets along well with small children and other pets, generally making friends quickly.

This breed is fairly vocal and makes a nice watch dog, announcing the arrival of guests or strangers. These dogs are loyal, obedient, loving, and affectionate, making excellent family pets and companions alike.

Unfortunately, there are also disadvantages to owning a Sealyham Terrier. This energetic and outgoing breed requires large amounts of daily exercise and room to run and play. Anyone wishing to purchase this breed lacking the adequate amount of time and space to dedicate to the dog is strongly advised against doing so.

A Sealyham Terrier not receiving the proper amount of exercise and space will often act out by destroying property, chewing, barking, whining, and ignoring basic training such as housebreaking.

The Sealyham Terrier has a strong instinct to hunt and will occasionally indulge in a good chase. When on the run, this breed is rather quick, and may pose a threat to other animals, neighborhood pets, and small woodland creatures. The Sealyham Terrier must be leashed or properly secured at all times when outdoors.

This breed's thick and impressive coat requires almost constant attention, brushing, and grooming to maintain its attractive appearance.

As previously mentioned, the Sealyham Terrier remains rather rare outside of Europe and can prove difficult to obtain. Individuals seeking to purchase this breed often encounter such challenges as inability to locate a breeder, extremely high prices, and being placed on long waiting lists.

Common Health Concerns

While the Sealyham Terrier is typically known as a healthy and hearty breed, they do suffer from a few health problems, including: Scotty Cramp - a disease affecting small Terrier breeds causing hyperextension and hyperflexion of the legs, skin infections, flea allergies, and von Willebrands Disease - a blood clotting disorder.

Now that you know all about the breed, do you think you are ready to own a Sealyham Terrier?

Remember, purchasing a pet is a big decision and should be discussed thoroughly and seriously with your entire family.