Paw-fect Facts About The Sealyham Terrier Dog Kids Will Love

Read these Sealyham Terrier facts to learn more about this show dog.

Sealyham Terriers are, without a doubt, one of the rarest breeds amongst terrier dogs. They were originally bred by Captain John Tucker Edwardes in 1850, with the motive of creating a hunting dog hunt small and medium sized animals such as otters, foxes and badgers. These dogs are lovingly regarded as seallies, and are also known by different names around the world, including Welsh Border Terrier and Cowley Terrier. This dog breed is greatly suited to families that live in apartments or houses and they are a great fit for families with other pets and children, once they are are effectively trained. With the help of medium level exercise and training, the quality of life for these dogs can be increased significantly.

Even though Sealyham Terriers are medium-sized terrier dogs, like West Highland Terriers, they are powerful and show many characteristic traits such as being lively, friendly, fearless and highly adaptable, along with being excellent watchdogs. After reading facts about this friendly white dog, you may also look at Schipperke facts and Newfoundland dog facts.

Sealyham Terrier

Fact File

What do they prey on?

Small animals and birds

What do they eat?


Average litter size?

4-6 puppies

How much do they weigh?

22-24 lb (9-10 kg)

How long are they?


How tall are they?

10-12 in (25-30 cm)

What do they look like?

Badger and white

Skin Type


What are their main threats?

Health problems

What is their conservation status?


Where you'll find them



Europe, USA and UK





Scientific Name

Canis lupus familiaris





Sealyham Terrier Interesting Facts

What type of animal is a Sealyham Terrier?

Sealyham Terriers are a terrier dog breed that has recently been put under the status of Endangered. These dogs were very common among people that had farms, but their population has reduced drastically over the years as a result of various different factors.

What class of animal does a Sealyham Terrier belong to?

Sealyham Terriers belong to the class of mammalia (mammals). These show dogs are known to give birth to their young ones and are thought to birth between four to six puppies at once.

How many Sealyham Terriers are there in the world?

Sealyham Terriers have been put under the category of Endangered by the Kennel Club in 2008 when only around 48 dogs were reported to be present in America. This dog breed has been defined as very rare and Vulnerable to Extinction. Sealyham Terriers are not easy to train or groom due to their excitable temperament. It was last said that less than 300 Sealyham Terrier puppies are bred or born in America yearly.

Where does a Sealyham Terrier live?

Sealyham Terriers are dogs that are believed to have been bred around 1851 in order to fight and protect farms from foxes. They derived their name from their owner Edwardes who was from the Welsh estate Sealyham, which is located in Pembrokeshire. These dogs have really strong hunting instincts and were originally bred as watchdogs for farms and houses.

Nowadays, the population of Sealyham Terriers has considerably decreased, earning their place as one of the most Endangered dog breeds that are found in Europe, America and the UK. This dog breed is known to be suited for farms, houses and apartments as long as they get regular walks, grooming, and exercise. Sealyham Terrier dogs also prefer to live indoors rather than outdoors in colder weather.

What is a Sealyham Terrier's habitat?

As we have already learned, Sealyham Terriers were bred by Captain John Tucker Edwardes in the early 19th century in order to hunt down small and medium sized animals. These small dogs are purebred dogs that prefer temperate weather. Sealyham Terrier dog breeds have a special liking for staying indoors, but are equally suited to farms with open areas, houses with open lawns or yards as well as apartments.

Who do Sealyham Terriers live with?

Sealyham Terrier dog breed are a great fit for families that have children, as well as other pets such as cats, as long as they have been effectively trained and socialized from puppyhood. These dogs usually live individually and have displayed no evidence of living with other Sealyham Terrier dogs, aside from mating. They are independent dogs that are protective about their human family, they can also be protective over things such as toys, which should be controlled through early training and socialization. These dogs also do well when left alone, unlike other dog breeds. But, these white colored dogs do require regular grooming and exercise as part of their care routine.  

How long does a Sealyham Terrier live?

Adult Sealyham Terrier dogs are primarily used as companion dogs. They are suited to farms, houses and apartments. Sealyham Terriers have been known to have a lifespan of around 12 to 14 years. Some of the healthiest members of the breed have been recorded to live until the ages of 17 to 18 years.

How do they reproduce?

Sealyham Terriers belong to the mammal class, and they are known to give birth to their young ones directly. These terriers reproduce sexually and are known to give birth to between three and six puppies at once.

What is their conservation status?

These family dogs have been put under the category of Endangered. The demand for these dogs has reduced over the years, which has resulted in a very limited supply of Sealyham Terriers. Sealyham Terrier are a dog breed that are not very easy to find whether buying from a breeder or adopting from a shelter. Because of this, they can be quite expensive which means people are less likely to buy them and hence they aren't bred as often. Sealyham Terriers can cost between 2,000 USD to 2,500 USD.

Sealyham Terrier Fun Facts

What do Sealyham Terriers look like?

Sealyham Terriers are one of the most friendly, intelligent and playful dogs. They have white double coat that includes a dense and soft undercoat with a wiry and hard outer coat. They also have really long hair on their muzzles and faces in comparison to the rest of their body. Sealyham Terrier dogs are usually white in color but also can have lemon, tan or badger markings on their head and ears.

Sealyham Terriers are medium height and they have a white coat with lemon, tan or badger markings.

How cute are they?

Sealyham Terriers were originally bred as hunting dogs and were usually kept in homes and farms to chase away foxes and otters. Nowadays, they are kept as companion dogs. They are a great fit for novice dog owners and make adorable, cute, loving and intelligent companions for families.

How do they communicate?

Sealyham Terriers are great watchdogs that can bark really loudly. Just like any other dog breed, they use vocalizations such as howls, barks, whines, growls and whimpers to try and communicate. They are very intelligent dogs that use licking and touching to show their emotions. They can also be trained to display other messages.

How big is a Sealyham Terrier?

Sealyham Terriers have the capacity to grow up to a height of around 11 in (27 cm) and a fully grown Sealyham Terrier usually weighs around 22-24 lb (9-10 kg). They are twice the size of other dwarf dogs such as pomeranians.

How fast can a Sealyham Terrier run?

Although Sealyham Terriers are a dog breed that needs consistent training, they don't tend to run very fast. Adult Sealyham Terriers usually run the fastest when they spot any prey. With regular exercise and training, the running speed of this breed can be easily improved. Regular exercise also helps to keep their health in check.

How much does a Sealyham Terrier weigh?

An adult Sealyham Terrier is known to weigh around 22-24 lb (9-10 kg). Female Sealyham Terriers are slightly lighter than male Sealyham Terriers, and can be identified by their slightly smaller size. In order to manage the weight and health of this breed, regular exercise along and good quality dog food is essential.

What are the male and female names of the species?

Like many other dog breeds and creatures, there are no specific names given to the male and female species of Sealyhams. They are generally regarded as bitch or female Sealyham Terrier in the case of females, and dog or male Sealyham Terrier in the case of males.

What would you call a baby Sealyham Terrier?

Baby Sealyham Terriers are called puppies. This is the case with all other dog breeds, and many other mammals too.

What do they eat?

Sealyham Terriers, like most other dog breeds, require healthy and high quality food that will help them stay away from health problems. It is suggested to feed them one cup of food in the morning, and one cup in the evening. They are omnivores and love carrots and veggies as well as chicken and meat. It is suggested to regulate their food intake and ensure that they regularly exercise to avoid health problems such as obesity.

Are they hypoallergenic?

Hypoallergenic dogs are one of the best choices for people who suffer from allergies due to dog fur or saliva. Sealyham Terriers have been regarded as one of the best choices for pet owners who are trying to find a hypoallergenic dog. Although no dog is completely hypoallergenic, Sealyham Terrier dogs have been considered one of the breeds that display hypoallergenic qualities and traits, much like American Staffordshires.

Would they make a good pet?

Sealyhams gained popularity during the 19th century and were listed as one of the most popular pet choices for celebrities all over the world. They are also considered to be great pets as they are medium sized dogs that are highly adaptable and can adjust to both apartments and houses with yards. They prefer temperate or cold weather, and love staying indoors.

Sealyham Terriers have a great temperament, and they display excellent traits such as being friendly and lively. They are perfectly suited for families with children and other pets if trained efficiently as they are mellow and a lot less rowdy when compared to other terrier breeds. Sealyham Terriers are excellent watchdogs and are very self assured. Sealyham Terriers medium energy level is perfectly suitable for apartment, farm or house living.

Along with having great qualities and characteristics, Sealyham Terrier dog breeds require much more grooming and care when it comes to their health and exercise. Sealyham Terriers require frequent brushing of their coat to reduce shedding and avoid tangling, they also require dental and nail care, regular exercise to keep fit and are also prone to some genetic diseases. Sealyham Terrier puppies are really protective of their family and belongings, which might not be suited to small children as they can react rather aggressively. However, this can be helped through training and socialization. They also do not have many health problems, which makes it slightly easier for owners to take care of them.

These dogs do not require a lot of resources and effort on the part of the owners. Exercise and training will help in ensuring the health and well-being of these pet dogs. Their medium energy level can be managed through regular walking, running, and obedience training. Owners must feed them good quality dog food to ensure the good health of this breed.

Did you know...

There is almost very little information available as to what dog breeds were used to create Sealyham Terriers. Some of the most commonly suggested dog breeds over the years are English White Terrier, West Highland White Terriers, Fox Terriers and Welsh Corgi.

Sealyham Terrier dog breeds were first recognized by the American Kennel Club in 1911 when they gained popularity. They were also among the favorite dog breeds owned by famous celebrities.

Sealyham Terriers were declared as an Endangered breed by the American Kennel Club in 2008.

Sealyham Terrier dog breed has a rich history, and they have been awarded the top place in the Westminster Dog Show of the USA and Crufts of UK.

Sealyham Terriers are independent dogs that require strict and patient training.

Sealyham Terriers are also prone to some common health problems such as primary lens luxation (PLL), retinal dysplasia, and IVDD (Degenerative Disc Diseases).

Do Sealyham Terriers shed?

Sealyham Terriers are one of the best dog breeds that show hypoallergenic traits or qualities and they are amongst the top suggested dog breeds for owners who have allergies.

Sealyhams are known to have a weather resistant coat. They have a medium to long double coat, with the undercoat being dense and soft while the topcoat is wiry and hard. They also have really long hair around the face and muzzle in comparison to the rest of their body. Sealyham Terriers are light shedders, which means they don't leave fur around the house. If owners prefer to keep a tidy home, these dogs are wonderful. Owners can also ensure that they shed less by brushing their coat every two to three days, this will also keep their coat untangled and will maintain the correct texture of their coat.

How do you pronounce Sealyham Terrier?

Sealyham Terrier pronunciation can be a bit difficult, but it is pretty much said as it looks. You pronounce Sealyham as SEE-lee-uhm and Terrier as TAIR-ee-uhr.

Here at Kidadl, we have carefully created lots of interesting family-friendly animal facts for everyone to discover! Learn more about some other mammals including Welsh Terrier, or Pyrenean Shepherd.

You can even occupy yourself at home by drawing one of our Sealyham terrier coloring pages.



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