Sealyham Terrier
Also known as: Sealy
Energy Level
Apartment Friendly
Weight (Male)
23-24 lbs
Height (Male)
10.5 inches
Quick Facts
Coat Colors
Breed Summary
The Sealyham Terrier is a rare, charming breed developed in Wales for hunting badgers and otters. With their distinctive appearance and playful personality, they are devoted companions now critically endangered.
History
Developed by Captain John Edwardes at Sealyham House in Haverfordwest, Wales, between 1850-1891. Created by crossing multiple terrier breeds for badger and otter hunting. Once hugely popular—now one of the rarest terrier breeds. AKC recognized in 1911.
Appearance
A sturdy, white terrier with a distinctive weatherproof coat. Broad, powerful head with profuse facial furnishings. Dark, deep-set eyes. Strong jaws. Low-set, wide body on short, powerful legs.
Temperament
Charming, spirited, and loyal. Sealyhams are calmer than many terriers but retain their hunting spirit. They are humorous, devoted, and make excellent companions with a distinctly independent personality.
Personality Around Others
Affectionate with family. Good with children. Can be assertive with other dogs. Friendly with visitors. Calm indoors.
Exercise Needs
Moderate exercise needs. Daily walks and play. Not hyperactive. Enjoy being active but also content to relax.
Training
Intelligent but independent. Positive reinforcement. Can be stubborn. Patient training yields good results.
Grooming
Dense coat needs regular brushing and hand-stripping. Professional grooming every 6-8 weeks. Beard needs cleaning.
Health
Common Health Conditions
Generally healthy. Eye issues are the primary concern. Limited gene pool due to rarity requires careful breeding.
Recommended Health Tests
- Ophthalmologist Evaluation
- BAER Test
Average Annual Vet Cost
$700-$1,400
Nutrition
Quality food for small breeds. Two meals daily. Monitor weight—can gain easily.
Living Environment
Excellent apartment dogs. Calm indoors. Enjoy walks but not demanding. Good indoor companions.
Ideal Family
Those appreciating a rare, charming breed. Families wanting a calm terrier. Those committed to breed preservation.
Intelligence
Intelligent with a sense of humor. They think things through. Patient problem-solvers.
Barking
Frequency
Alert
Separation
Quiet Indoors
Quiet for a terrier. Bark when alerting but not excessive. Calm and composed.
Shedding
Year-Round
Seasonal
Vacuum Factor 🧹
Hypoallergenic
Low shedding with regular grooming. Dense coat needs maintenance.
Weather Tolerance
☀️
Heat
❄️
Cold
🌧️
Rain
🌨️
Snow
💧
Humidity
Breed Ratings
Fun Facts
Once one of the most popular terrier breeds—now critically endangered
Developed by Captain John Edwardes specifically for badger hunting
Cary Grant, Elizabeth Taylor, and Alfred Hitchcock all owned Sealyhams
The Kennel Club lists them as a vulnerable native breed
Were once called the couch potato of terriers
Famous Dogs
Hitchcock's Sealyhams
Alfred Hitchcock was devoted to the breed and featured them in several films
Elizabeth Taylor's Sealyhams
The actress owned several Sealyhams throughout her life
Common Myths
"They're extinct"
While critically endangered, dedicated breeders worldwide are working to preserve the breed
"They're just white generic terriers"
Sealyhams are a distinct, carefully developed breed with a specific hunting heritage
Frequently Asked Questions
How rare are they?
Very rare—fewer than 300 puppies are registered annually worldwide. They are critically endangered.
Are they calm dogs?
Calmer than most terriers. They enjoy walks but are also happy relaxing at home.
Puppy Guide
Sealyham puppies are charming and playful. Start grooming early. Socialize broadly.
Senior Care
Senior Sealyhams are calm and devoted. Watch for eye issues. Moderate walks. Comfortable seniors.
Ownership Costs
Estimated Lifetime Cost
$14,000-$22,000
Pros and Cons
Pros
Calm for a terrier
Charming personality
Good apartment dog
Low exercise needs
Devoted companion
Cons
Critically endangered
Very limited availability
Needs regular grooming
Can be stubborn
Weight management needed