Terrier group · Wales
Sealyham Terrier
Also called Sealy.
What makes them remarkable
Once a favourite of Hollywood stars, this Welsh working terrier is now an uncommon sight.
- Outgoing
- Friendly
- Alert
- Calm
- Humorous

- Size
- Small
- Weight
- 10 to 11 kg23 to 24 lb
- Lives
- 12 to 14 years
- Energy
- Moderate
- Trains
- Moderate
- Barks
- Moderate
Training
Training a Sealyham Terrier
Terrier breeds. Impulse control and a rock-solid leave it. Short, high-value sessions; they bore fast.
Patient Persistence
Start here
Sealyhams can be stubborn but respond to patient, consistent training with humor.
Calm Approach
More relaxed than many terriers. Match their energy with calm, positive training.
Socialisation
Can be reserved with strangers. Early exposure to people prevents excessive wariness.
The app turns this into five to fifteen minutes a day.
Add your Sealyham Terrier and it builds the plan around their age, where they came from and what they already know, one step at a time.
Free to start. iPhone. No card needed.
At home
Living with one
Bred to go to ground after vermin. Fearless, quick, and not built to back down.
Gets on with
- ChildrenHigh
- Other dogsModerate
- StrangersModerate
- CatsLow
Breed averages. Early socialisation and the individual dog matter more.
- Exercise
- 30-45 minutes daily. Moderate walks and play. Calmer than most terriers.
- Grooming
- Hand-stripping 2-3 times yearly. Regular brushing and trimming around face.
- Drool
- Low
- Coat
- Wiry outer coat, Dense undercoat, Weather-resistantWhite, White with Lemon, White with Badger markings
- In a flat
- Can work, with enough exercise outside it.
Health
Things to ask a breeder or vet about
Primary Lens Luxation
Severe
Inherited eye condition. DNA test essential
Retinal Dysplasia
Moderate
Developmental eye abnormality
Deafness
Moderate
Congenital deafness occurs in the breed
Where they come from
History
Developed in the mid-1800s by Captain John Edwardes at Sealyham House in Wales. Created to hunt badgers, otters, and foxes. Once extremely popular but now one of the rarest terrier breeds. Was a favourite of Hollywood stars in the 1920s-1940s.
- Dookie · One of Queen Elizabeth II's early dogs before she switched to Corgis
- Alfred Hitchcock's Sealyhams · The director was devoted to the breed and owned several
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