Sealyham Terrier

Sealyham terrier

A small, mainly white dog. Working breed lines still show a fearless nature and keen hunting instinct. Alert but with a good disposition – said to be one of the best temperaments of the terrier group, with a calm relaxed attitude. Friendly, charming and clownish with a sense of humour. Loves to play. A devoted companion. This is a rare breed which has been on the ‘at risk’ register in the UK. Is again gradually increasing in popularity.

Minimum Exercise:

Exercise/Activity Level: Medium. About an hour a day free running. However this terrier will go as far as you like. Can cover the ground at considerable speed. However it also has a reputation of being a couch potato, loving to curl up with its humans.

Size: Up to 12 inches

Weight: 18-20lbs

Colour: Mainly white with some cream, tan and grey. Can come in all black

Town or Country: Both. Does well in towns given exercise and play time.

Low Allergy: Yes

Best Suited for: A wide range of households in town and country. This is an all-round companion dog equally at home in the field or by the fireside.

Group: Terrier

Originally From: Wales

Original Purpose: Working. Hunting rats and small game, including working with foxhounds to burrow out foxes and badger. Now primarily a companion dog.

Living Space: Low

Coat: Medium to long. A double coat with a soft and dense undercoat and an outer coat that is hard, wiry and weather-resistant.

Grooming: Medium. Can be clipped to keep hair short. The Sealyham requires regular grooming and combing to remove the loose hair, to prevent the coat from matting. The Sealyham should be stripped on a regular basis. Needs a bath about once a month.

Children: High. This is a game little dog that loves to play and clown. If socialised early makes a great child companion. However might nip if handled roughly, and can be a little dominant. Older and considerate children would be better but it depends on the dog, child and early training.

Sociability with strangers: Medium to high. Some are initially wary until they see the ‘pack leader’ is fine with the strangers, and then will accept them. Other believe all humans were designed to adore them.

Sociability with animals or other dogs: High with other dogs. This terrier was bred to work as part of a larger hunting pack such as with otterhounds. With early socialisation will happily blend with all other dogs. However any dominant tendencies will need to be spotted and managed early.

Trainability: Medium to high. This dog loves to please. Positive reward-based training should start right away, but generally reaps very positive results. This dog has the occasional usual terrier determination and stubbornness.

Noise Level: Medium. This dog has a big bark and will alert you to strangers but is not yappy. Early training to remove unwanted and inappropriate ‘alarms’ yields positive results.

Known Health Issues: Deafness, eye problems (lens luxation – the lens pops out of place), skin allergies. Should ensure you check the breeder’s eye testing/scoring results

Lifespan: 12-15 years

Special Needs:

Special and heartfelt thanks are given to the UK Sealyham Terrier Breeders Association for their help in compiling this profile.  Without them this would not have been possible.  Their website and contact details can be found here:


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