Sealyham Terrier

Sealyham Terrier

The Sealyham Terrier is a small, rectangular-shaped terrier, with a long, wiry coat that comes in white or white with different coloured markings (see the breed standard for details). They stand at 31cm or under when fully grown, with adult dogs weighing about 9kg and adult females about 8kg.

Sealyham Terrier
  • Category size: Small
  • Grooming requirements: Daily
Sealyham Terrier
  • Shedding: None
  • Allergies: Yes
  • Noise: Vocal
  • Dog Group Kennel Club: Terrier
Sealyham Terrier
  • Alone: 1 to 3 hours
  • Other pets: Medium
  • Stability as a guard: High


The Sealyham Terrier dog breed is quite a recent breed, dating back to the middle of the 19th century when Captain John Owen Tucker-Edwardes, from Sealyham Mansion in Pembrokeshire, south-west Wales, decided to create the perfect terrier once he retired in 1848 and could devote more time to hunting pursuits. He used the Corgi, West Highland White Terrier, Wire Fox Terrier, Bull Terrier, Dandie Dinmont Terrier, and Cheshire Terrier, it is believed. The Sealyham Terrier was used, along with Otterhounds, to hunt otter, fox and badger.


The Sealyham Terrier has many typical terrier traits: he is game and fearless, but friendly towards people. Ever alert, he will bark if anything unusual attracts his attention, and he will show his displeasure if another dog picks a quarrel with him. Early socialisation to cats and other dogs is essential. Full of character, he makes a fun, playful companion.


The Sealyham Terrier is generally a healthy and robust breed. Like many breeds they can suffer some inherited eye conditions and so eye testing recommended.


The Sealyham Terrier needs at least an hour's daily exercise, though is capable of more if you can offer it. Being low to the ground, he is a particular mud magnet in wet weather, so accustom him to being dried from when young, so he views it as an enjoyable, rewarding experience.


Small dogs have a fast metabolism, meaning they burn energy at a high rate, although their small stomachs mean that they must eat little and often. Small-breed foods are specifically designed with appropriate levels of key nutrients and smaller kibble sizes to suit smaller mouths. This also encourages chewing and improves digestion.


Daily grooming will keep the non-shedding coat tangle-free. Mats will otherwise develop, with the long, hard top coat and thick undercoat tangling together. The coat is trimmed expertly for the show ring – a labour-intensive, skilled process that will take some practice to get right! Your breeder will help to advise you. Many pets are clipped uniformly all over.

dog-breed image missing

Is this the right dog breed for you?

All dogs have their own, unique personality, but some instincts and behaviours they’re born with. Try our breed selector and find out which dog breeds better match your preferences and lifestyle. If you and your dog enjoy similar things, you will be more likely to live a happy, fulfilling life together.


What to Consider next


It is incredibly fulfilling to adopt a dog from an animal shelter or rescue organization. It often means offering them a second chance in life. There are many dogs waiting for a loving family, a forever home. Reputable centers will be very careful about matching the right people with the right dogs. Staff learns all they can about the dogs they take in, and will spend time getting to know you, your family and your lifestyle, before they match you with any of their dogs. They’ll also be happy to give you advice and answer any questions you might have before and after the adoption.

Finding a good breeder

If your heart is set on a pedigree puppy, then your best bet is to find a reputable breeder. Contact The Kennel Club or a breed-club secretary who may have a list of litters available, or should be able to put you in contact with breeders in your area. Try to choose a breeder who is part of the Kennel Club’s assured breeder scheme.Visit dog shows to meet breeders in person and inquire about availability of pups of your chosen breed.

Welcoming your dog home

Whether you’re bringing home a tiny puppy or rehoming an adult dog, this is a hugely exciting time for everyone. While you’re waiting for the big day you might need to distract yourself, so luckily there are a few things you need to sort out before you welcome your new arrival. Click here for more information