Sealyham terrier

Other name: Sealyham Terrier

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A small dog, the Sealyham Terrier is no less vigorous and lively. Originally bred for hunting, he has carved out a place of choice as a family dog over the generations. A notoriety favored in particular by obtaining distinctions during major dog events, but also by the fact that representatives of the breed were bred by movie stars.



Photo: Sealyham Terrier dog breed on Woopets

Hypoallergenic breed Hypoallergenic breed

Hair type Long
Origin Britain
Template Small
Head shape Long
Weight and size
Sex Weight Cut
Female From 28 kg to 31 kg From 8 cm to 9 cm
Male From 28 kg to 31 kg From 8 cm to 9 cm
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History of the breed

The Sealyham Terrier breed originates from Great Britain , specifically Wales. It is, in fact, in a Pembrokeshire castle, called Sealyham Mansion or Sealyham House , that the first breeding is located.

In the mid-1800s, former army officer John Owen Tucker-Edwardes was raising Otterhounds for otter hunting on the banks of the Sealy River, while developing a line of stocky, determined and energetic terrier dogs. His Sealyham Terriers were smaller and more fiery than those we see today.

The Sealyham Terrier experienced its golden age in the interwar years. The breed has been awarded 3 times at the prestigious Westminster Kennel Club Dog Show . One of its most famous representatives was named Bootlegger and had lived during Prohibition. World famous actors such as Humphrey Bogart , Gary Cooper and Cary Grant were among the known owners of Sealyham Terriers and contributed to their popularity.

Physical features

His coat : long, with a “wire” type texture as regards the top coat. Associated with a dense undercoat, giving the dog a good protection against bad weather. Form a fringe on the top of the muzzle, usually starting at the base of the forehead and working down the sides.
Its color : entirely white, with or without lemon, brown, blue or badger markings on the head and ears.
His head : long. The skull is slightly domed and wide. The nose is black, the jaw square, long and powerful.
His ears : medium in size, rounded at the ends and worn on the sides.
His eyes : round, medium in size and dark in color.
His body : writable in a rectangle (longer than high). The back is straight, the chest wide and high, the ribs well sprung.
Its tail : moderately long, thick at its attachment and tapering towards its end. Carried straight, never curved over the back, nor rolled up.

Behavior and character

Barks / howls

Behavior with others

Cohabitation with children
Sociable with other animals
Love strangers

Active, lively and vigorous , the Sealyham Terrier has a balanced temperament . He is lively , courageous , but also friendly and affectionate . The Sealyham Terrier can also be somewhat stubborn at times.

Very attached to his master , he likes to please him and appreciates having a task to accomplish. He is, moreover, very alert and willing to bark, which makes him a reliable watchdog and alarm dog. With children, he is particularly playful and energetic .

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Like most Terriers, who are known to be active and endowed with a strong character, it is important to ensure that the Sealyham Terrier receives an early and firm, but fair education . In other words, it’s about making him an obedient and balanced dog, without brutalizing him in any way.

Learning to recall is essential , as is the quality of its socialization. This dog retains hunting instincts, hence the need to temper them by making him meet as many individuals as possible from an early age.

Living conditions

Suitable for apartment living
Good for new masters
Love it hot
Love the cold

The Sealyham Terrier is characterized by a great adaptability , which allows it to adapt to a wide variety of living environments. It can evolve in an urban environment as in a rural environment. He is able to live in an apartment , as long as he gives him enough opportunities to let off steam and meet new people. The ideal would be for him to have a large fenced garden .


Ease of gaining weight

If he is a robust dog and resistant to cold and bad weather, the Sealyham Terrier can be affected by eye and ear diseases due to the specificities of his eyes (generously surrounded by hair) and his ears. His tears can accumulate and crystallize on the hair, just as the inside of his ears can be prone to infections. For the rest, he does not have much to fear on the health side.

Hypoallergenic breed


Litter size

Between 3 and 6 puppies

Major concerns
Intestinal tumors
Minor concerns
Retinal dysplasia
Dislocation of the lens
Occasional concerns
Atopic dermatitis
Suggested tests

To guard against these risks and insure your companion in the event of health problems, Woopets recommends Sealyham Terrier dog insurance .

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Life expectancy

Minimum: 12 years old

Maximum: 15 years

The life expectancy of a Sealyham Terrier is, on average, between 12 years and 15 years.

Calculate the human age of your Sealyham Terrier!

To choose… 1 year 2 years 3 years Four years 5 years 6 years 7 years 8 years 9 years 10 years 11 years old 12 years 13 years 14 years old 15 years old 16 years old 17 years 18 years old 19 years old 20 years 21 years old

Maintenance and hygiene

Ease of maintenance
Cost of maintenance
Hair loss
Drool level
Ease of grooming

His long, dense and double coat requires regular care , although his hair loss during seasonal shedding is not particularly excessive. Overall, the maintenance of the Sealyham Terrier does not pose any difficulty , as long as it is provided on a constant basis.

Maintaining the beauty and health of the Sealyham Terrier’s coat and skin requires thorough brushing every 2-3 days to prevent tangles. Particular attention should be paid to the facial fringes , where secretions and debris can accumulate. The inside of his ears also calls for frequent inspections and cleaning with a suitable lotion.

His teeth need to be brushed frequently to remove tartar build-up and the proliferation of bacteria. Finally, if they do not wear out naturally, its claws need to be cut. If you are new to this, it is recommended that you seek advice from a veterinarian or groomer.

Price and budget

Purchase price

€ 1,200
€ 1,800

The purchase price of a Sealyham Terrier is between € 1,200 and € 1,800.

Annual maintenance cost

250 €
€ 350

The annual maintenance cost of a Sealyham Terrier is between € 250 and € 350.

No name is currently proposed. Use our tool to find your Sealyham Terrier’s name!


The diet of the Sealyham Terrier does not differ significantly from that of most of its counterparts from other breeds. It must simply be of high quality (premium kibble or balanced homemade meals), adapted to the specific characteristics of the dog (age, state of health, activity, etc.) and given in reasonable portions to avoid overweight.

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Physical activity

Energy level
Potential to play

The physiognomy of the Sealyham Terrier should not lead one to think that its need for exercise is reduced. On the contrary, this active dog requires long daily outings, games and activities able to stimulate him sufficiently both physically and emotionally and sensory.


Classifications & Standards
(FCI) Fédération Cynologique Internationale
(AKC) American Kennel Club
(UKC) United Kennel Club
(NZKC) New Zealand Kennel Club
(ANKC) Australian National Council Kennel
(CKC) Canadian Kennel Club
(KC) The Kennel Club


Master character <span class="btnTooltip qTip2" title="- Calm: the master must be gentle and know how to show patience.
– Active: the owner must be energetic and dynamic to live in harmony with his dog.
– Hyperactive: the owner must be stimulating and very restless to suit the temperament of his dog.”>

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FCI Information



FCI Group

Group 3: Terriers

Recognized by FCI

Since 1954


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