You haven't lived until you've met a Sealyham Terrier. This charming breed packs a big personality into a small furry body. Friendly, energetic, and endlessly amusing, the Sealyham Terrier makes an ideal companion for anyone seeking a lively and loyal pet. Originally bred in Wales as a working terrier, the Sealyham retains a sense of purpose and independence along with a fun-loving spirit.

Their shaggy coat and short stature give them an instantly endearing appearance, but it's their vibrant and mischievous temperament that wins hearts. For those seeking a faithful friend to share adventures and snuggles, the Sealyham Terrier delivers companionship in a delightfully furry package. Meet this spirited breed and you'll soon be smitten with their charisma and zest for life. The Sealyham Terrier - once you've met one, you'll never forget them.

Sealyham Terrier

Origins of the Sealyham Terrier Breed

The Sealyham Terrier finds its origins on the Sealyham Estate in Wales, UK. Captain John Edwardes, a keen hunter, developed this breed in the early 1900s by crossing the Welsh Corgi, Dandie Dinmont Terrier, and the West Highland White Terrier. His goal was to create a hardy, short-legged terrier that could hunt badgers, otters, and foxes.  

The result was a small but courageous white terrier that became known as the Sealyham Terrier. This breed gained recognition from The Kennel Club (UK) in 1911 and from the American Kennel Club in 1911. For a period, the Sealyham Terrier was one of the most popular terriers, but today it is considered a vulnerable native breed.

Sealyham Terrier fi collar

Appearance: The Signature Look of the Sealyham Terrier

Described as charming and lively, the Sealyham Terrier makes for a devoted companion animal and show dog. They are playful, energetic and thrive on human interaction and mental stimulation. Sealyhams require daily exercise and grooming to keep their medium-length double coat mat-free and white. They can live 12-15 years and tend to be healthy, though prone to certain eye disorders and allergies. 

Overall, the Sealyham Terrier’s amusing and spirited personality, in a pint-sized package, continues to win the hearts of owners seeking an entertaining and faithful pet. This breed remains an important part of British cynological history and a symbol of one man’s passion for developing the ideal hunting companion. If you’re looking for vivacious companionship and comedy in a furry friend, the charming Sealyham Terrier could be your perfect match.

Temperament: Lively, Loyal, and Full of Personality

The Sealyham Terrier is instantly recognizable by its distinctive appearance. This charming breed has a rectangular body, short legs, and a weather-resistant double coat.


The Sealyham Terrier has a double coat consisting of a soft, dense undercoat and a hard, wiry outer coat.  This coat requires frequent grooming to prevent matting and tangles. Weekly brushing and combing, as well as trimming every 4-6 weeks, will keep the coat clean and trimmed. Bathing should only be done when necessary using a quality dog shampoo to maintain the natural oils in the coat.


The coat comes in white, white and lemon,  white and tan, or white and badger colors. White should predominate on the body, with the lemon, tan, or badger appearing only on the head and ears. Pigmentation around the eyes and nose is black.


The Sealyham Terrier has a sturdy, rectangular build and typically stands 9 to 11 inches tall at the shoulder. Males and females are similar in size and proportion. This breed weighs an average of 15 to 20 pounds. The compact size and portable weight of the Sealyham Terrier make it suitable for apartment living or homes with limited space.  

With weekly grooming and exercise, this charismatic breed can make an affectionate and entertaining companion for many years. The distinctive good looks and charming temperament of the Sealyham Terrier have brought joy to owners around the world.

Ideal Home: What Sealyham Terriers Need

The Sealyham Terrier has a lively, loyal temperament and endearing personality. This charming breed makes an ideal companion for individuals and families.

A Playful and Energetic Companion

The Sealyham Terrier is a playful breed that enjoys interactive play with their owners and families.  They have an energetic temperament and require daily exercise and activity to keep them stimulated and prevent behavioral issues. Taking a Sealyham Terrier for walks, playing fetch, and engaging in tug-of-war are excellent ways to bond with this breed and burn off excess energy.  

An Affectionate and Devoted Pet

Sealyham Terriers form extremely close bonds with their owners and families.  They are an affectionate breed that thrives on human interaction and attention. Sealyhams are devoted companions who want to be by their owner's side as much as possible. They do not do well if left alone for long periods and can suffer from separation anxiety.  Owners should be prepared to spend plenty of time with a Sealyham Terrier to keep them happy and address their need for affection and closeness.

A Friendly and Charming Nature

The Sealyham Terrier has an upbeat, charming personality.  They tend to be very friendly towards new people and animals, though early socialization is still important.  Sealyhams are playful, lighthearted dogs that enjoy making new friends and being the center of attention.  Their spirited and comical nature provides endless entertainment for owners.  However, Sealyham Terriers require patient, experienced owners who can properly handle their energetic and willful temperament.  

In summary, the Sealyham Terrier is a lively, charismatic breed with a loyal and devoted temperament.  They form extremely close bonds with their owners and families, though require time, attention, exercise, and training to address their energetic nature and prevent behavior issues.  With the proper care and environment, a Sealyham Terrier can make a wonderful companion.

Exercise Needs: Keeping This Breed Active

The ideal home for a Sealyham Terrier provides certain necessities to keep this energetic breed happy and healthy.  


Sealyhams are an active breed and require daily exercise and playtime.  They do best in homes with a yard, where they have room to run and play, rather than confined to an apartment.  Sealyhams can live in apartments if provided with multiple walks and play sessions outside each day to expend their energy.  


Sealyhams thrive on human interaction and companionship.  They do not do well if left alone for long periods.  Owners should be prepared to spend ample quality time with their Sealyham each day through walks, play, grooming, training, and cuddling.  Sealyhams can suffer from separation anxiety if left alone too frequently or for extended periods.   


Early socialization and training are important for Sealyhams.  Owners should start training their Sealyham as a puppy to prevent behavior issues like excessive barking, separation anxiety, and aggression.  Sealyhams are intelligent and eager to please, so they respond well to positive reinforcement training with treats, play, and praise.  Basic and intermediate obedience training, as well as house training a Sealyham puppy, will help ensure they become well-adjusted companions.


The Sealyham's long, double coat requires frequent brushing and combing to prevent matting and tangles.  Owners should brush their Sealyham at least 2-3 times a week and bathe monthly.  Sealyhams also need regular nail trims, ear cleaning, and teeth brushing as part of their grooming routine.  Professional grooming every 4-6 weeks is also recommended to trim their coat and nails.   

In summary, the ideal home for a Sealyham Terrier is one that can provide space, attention, training, and proper grooming.  With the right care and environment, Sealyhams have made charming, devoted companions for many years.

Sealyham Terrier

Bringing Out the Best in Your Sealyham

The energetic and playful Sealyham Terrier requires daily exercise and activity to keep them happy and healthy. As an active breed, they need opportunities to release pent-up energy and challenge their minds.  


Sealyham Terriers should be walked daily for at least 30-60 minutes. Walking provides mental stimulation and the opportunity to explore, in addition to physical exercise. Be sure to walk your Sealyham on a leash, as their strong prey drive and curiosity may lead them to run off or chase small animals. Walking your Sealyham Terrier with a harness instead of a collar is recommended to avoid choking and provide more control.


Playtime is essential for bonding with your Sealyham Terrier and keeping them engaged. Provide interactive play sessions of 15-30 minutes, 2-3 times per day. Puzzle toys, rope toys, balls, and tug-of-war toys are excellent options for play. Sealyham Terriers are intelligent and benefit greatly from mentally stimulating play. Teaching tricks and commands is also a great way to challenge them and strengthen your bond.

Dog Sports 

For Sealyham Terriers with a lot of energy, dog sports are an outlet to channel their enthusiasm productively. Agility training courses, flyball, dock diving, and barn hunt are some activities well-suited to the breed. Sealyham Terriers can make enthusiastic competitors and participants in these challenging sports. Consult with a vet before starting any intense activity with a Sealyham Terrier puppy to avoid damage to growing joints.  

Keeping a Sealyham Terrier active and occupied is essential to their well-being and happiness. Provide opportunities for exploration, play, and challenge to keep this lively breed stimulated. An under-exercised Sealyham Terrier may become bored, restless, and develop behavioral issues. With the proper amount of activity and interaction, the Sealyham Terrier can make an amusing and dedicated companion.

Health Considerations: Potential Issues to Watch For

Training your Sealyham Terrier requires patience, consistency, and positive reinforcement.  Follow these tips to bring out the best in your charming companion:


Early socialization of Sealyham Terrier puppies is crucial.  Expose your puppy to many different people, sights, and sounds in a gradual, positive way during the first 14 weeks.  Take your puppy for walks in different areas to get them accustomed to various environments.  Enroll in a puppy kindergarten class to help socialize your puppy with other dogs and people.  With proper socialization, your Sealyham Terrier will grow into a friendly, outgoing companion.

Basic Obedience 

Teach your Sealyham Terrier basic obedience commands like ‘sit,’ ‘stay,’ ‘come,’ ‘leave it,’ and ‘no.’  Use positive reinforcement techniques like treats, praise, and play.  Be patient through the repetition required.  Enroll your Sealyham Terrier in an obedience class to help establish yourself as the pack leader.  Obedience training will make your Sealyham Terrier easier to handle and a better-behaved family member.

House Training

House training a Sealyham Terrier requires diligent consistency and supervision.  Take your Sealyham Terrier out frequently, especially after they eat, drink, or wake up.  Closely supervise them indoors.  If they have an accident, never punish them.  Simply take them out immediately and clean the area thoroughly.  Praise and reward your Sealyham Terrier when they go to the bathroom outside.  House training can take 4-6 months, so remain patient and consistent.  


Get your Sealyham Terrier accustomed to regular grooming at an early age.  Gently brush and comb their coat 2-3 times a week to prevent matting and tangles.  Bathe your Sealyham Terrier only when necessary, as over-bathing can dry out their skin.  Trim your Sealyham Terrier’s nails if they get too long, and check their ears regularly for infection.  Daily dental care like brushing or chewing interactive dog toys will keep their teeth clean and prevent disease.  Regular grooming will keep your charming Sealyham Terrier looking and feeling their best.

With patience, positive reinforcement, and consistency, you'll bring out the best in your lively and loyal Sealyham Terrier.  Their playful, comical personality will shine through, and you'll have a devoted life companion.

Sealyham Terrier gps collar

Finding Your Perfect Sealyham Terrier

Sealyham Terriers can live 12-14 years, so ensuring your furry companion’s health and wellbeing is a long-term commitment.  Be diligent about routine veterinary care and be on the lookout for potential issues common to the breed.

Dental Disease

Sealyham Terriers can be prone to dental problems like gingivitis or periodontal disease if teeth are not properly cared for. Brush your Sealyham’s teeth regularly with a vet-approved dog toothpaste and schedule annual dental cleanings with your vet. Poor dental health can lead to bad breath, tooth loss, and other problems.  

Eye Issues  

Sealyham Terriers may develop certain eye disorders, including glaucoma, cataracts, or retinal dysplasia.  Watch for symptoms like excessive tearing, squinting, pawing at the eyes, or cloudy pupils.  Have your vet examine your Sealyham’s eyes during routine visits to check for any problems. Early detection of eye issues is critical to preventing vision loss or blindness.

Skin Allergies

Sealyham Terriers can suffer from adverse reactions to common irritants like pollen, mold, or household chemicals.  You may notice excessive scratching, licking feet, hot spots, rashes, or hair loss.  If you suspect skin allergies, talk to your vet.  They can help determine the cause of the reaction and recommend appropriate treatments like antihistamines, diet changes, or other therapies.  

Other Considerations

Additional health issues to be aware of include hip dysplasia, hypothyroidism, epilepsy, and patellar luxation.  As with any breed, obesity can exacerbate joint problems and other issues, so measure out portions and stick to a regular feeding schedule.  Keep your Sealyham at a healthy weight and provide plenty of opportunities for exercise and activity to support overall wellness.  

With attentive care and by working closely with your vet,  many potential health issues for the Sealyham Terrier can be effectively managed or avoided altogether.  By making your faithful companion’s health and happiness a top priority, you'll be rewarded with many years of devoted companionship.

Bringing Home Your New Sealyham Terrier

When searching for a Sealyham Terrier to join your family, take the time to find a reputable breeder. Look for breeders who health test their dogs and breed to improve the breed, not just for profit. Meet the breeder, see the living conditions of their dogs, and ask questions about the breed and their breeding program. 

Once you find an ethical breeder, spend time with the puppies and their parents to get a feel for their temperament and find one that connects with you. Sealyham Terriers are charming and lively but also require daily interaction, exercise, training, and grooming. Be prepared to commit the time needed to properly care for these intelligent and energetic dogs.

Consider if a puppy or adult dog is right for your situation. Puppies require housetraining, crate training, and basic obedience training, but an adult may already have some training and life experiences. Either way, early positive reinforcement training is key for the Sealyham Terrier. Use reward-based training with treats, play, and praise to keep them engaged. Harsher discipline will likely backfire.  

Grooming a Sealyham Terrier is also essential.  Their long double coat needs brushing two to three times a week to prevent matting and tangles. Bathing every four to six weeks, trimming, and clipping are also required to keep their coat clean and shaped. Be prepared to spend 30-60 minutes a week on grooming or budget for regular trips to a professional groomer. 

The Sealyham Terrier can make a wonderful companion for an active single, couple or family. However, their sometimes stubborn and mischievous nature means they require an experienced owner who understands terrier temperament. If you are willing to put in the time to properly care for, train, and groom this breed, the Sealyham Terrier will reward you with their charm, playfulness, and loyalty for many years to come.

Sealyham Terrier


In conclusion, the Sealyham Terrier is a delightful companion with a rich history and a charming personality. Their adaptability, loyalty, and distinctive appearance make them a wonderful addition to various households. Whether you're considering a Sealyham Terrier for their historical significance, showmanship, or simply as a loving pet, understanding their unique traits is key to a fulfilling relationship.


  • Are Sealyham Terriers good with kids?
    • Sealyham Terriers are generally good with children, but early socialization is crucial to ensure positive interactions.
  • What is the average lifespan of a Sealyham Terrier?
    • The average lifespan of a Sealyham Terrier is around 12 to 14 years, provided they receive proper care and attention.
  • Do Sealyham Terriers require a lot of grooming?
    • Yes, Sealyham Terriers have a dense double coat that requires regular grooming to prevent matting and maintain their overall health.
  • Are they easy to train?
    • Sealyham Terriers are intelligent but can be independent. Consistent, positive reinforcement-based training is essential for success.
  • Can Sealyham Terriers live in apartments?
    • Yes, Sealyham Terriers can adapt well to apartment living, provided they receive sufficient exercise and mental stimulation.