Sealyham Terrier

The Sealyham Terrier is a medium-sized dog, that is long in the body, short-legged and set low-to-the-ground. The rarely seen Sealyham Terrier originates from Wales, and was developed by crossing breeds such as the West Highland Terrier, Bull Terrier, Welsh Corgi, Dandie Dinmont and the Wire Fox Terrier to create a fearless dog capable of hunting vermin.

Sealyham Terrier breed category


Size of the Sealyham Terrier

Medium. The Sealyham Terrier is rectangular in shape, with short legs that are set low-to-the-ground.

Colour varieties of the Sealyham Terrier

The Sealyham Terrier is seen in a small variety of colours and markings including:

  • White
  • White & Badger Markings
  • White & Blue Markings
  • White & Brindle Markings
  • White & Tan Markings
  • White & Black Markings

Country of origin


Size and weight of the Sealyham Terrier

Height at withers both bitches and dogs  up to 25 cms (12 ins)

Weight bitch 8 kgs
Weight dog 9 kgs

Exercise requirements of the Sealyham Terrier

The Sealyham Terrier thrives on plenty of exercise, and requires at least an hour of physical activity each day.

Sealyham Terrier temperamment, socialisation with children, other dogs and other pets

The Sealyham Terrier is a feisty, bossy and independent character. The breed can be aggressive with other dogs, so needs a firm and competent handler. It is a rare breed, and very uncommon outside of the U.K. The long hair on the muzzle can make meal times rather messy.

Is the Sealyham Terrier a good dog for a first time owner?


Sealyham Terrier coat length

The Sealyham has a long wiry, hard  top coat, with a weather resistant undercoat, which requires expert grooming, especially if you intend to show your dog.

Date of origin


Lifespan of the Sealyham Terrier

14 years