Sealyham Terrier
The Sealyham Terrier is described by the AKC as alert, outgoing, sense of humor, a member of the Terrier Group, originally from Wales.
Last updated: October 2026 · 5 sources · see sources
| Height | 10.5 inches [1] |
|---|---|
| Weight | 23-24 pounds (male), slightly less (females) [1] |
| Life expectancy | 12–14+ years [1] |
| Temperament | Alert / Outgoing / Sense Of Humor [1] |
| AKC group | Terrier Group [1] |
| Origin | Wales [1] |
| AKC popularity (2025) | No. 163 of 202 [2] |
Traits at a glance
Scores are the AKC's 1–5 breed trait ratings. [1]
Exercise needs
Sealys love to run in a safely enclosed area and enjoy plenty of exercise. They can overheat in hot, humid weather, so exercise is best in the early morning and in the evening. Grass stains are common, and it may be necessary to wash furnishings and condition often. [1]
Grooming
The breed's weather-resistant, double 'jacket' and profuse leg and body furnishings must be combed and brushed every two or three days, as Sealy coats tend to mat easily. The coat does not shed but must be hand-stripped or clipped on a regular basis. Pet Sealyhams can be kept trimmed short with minimal furnishings, which makes their care easier. [1]
Health issues to budget for
Allergies are fairly common in the breed but are seldom of a really serious nature. There are several genetic eye diseases that potential sires and dams should be tested for before breeding. The American Sealyham Terrier Club provides detailed information on breed health. Non-genetic eye conditions such as tearing and infections can occur because of the breed's long eyebrows. [1]
AKC-recommended health tests for breeding dogs: Ophthalmologist Evaluation, Primary Lens Luxation (PLL) - DNA Test. [1]
Estimated costs
| Item | Estimate | Src |
|---|---|---|
| Typical vet bill for a small dog (median $508) | $273 – $1,110 | [3] |
| Emergency visit, small dog | $352 – $1,258 | [3] |
| Surgery when needed, small dog | $435 – $1,484 | [3] |
| Yearly cost of a dog, any breed (ASPCA 2021) | $1,391 | [4] |
| Average accident & illness insurance, dog (US 2025) | $836/year | [5] |
Breed-specific price data is rare. These figures are for dogs of this size or for the conditions above, not a quote for your pet.
Did you know?
- The AKC first recognized the Sealyham Terrier in 1911. [1]
- It ranked No. 163 on the AKC's 2025 most-popular list, compared with No. 158 in 2015. [2]
- Its nickname is the “Sealy.” [1]
- The AKC lists Wales as the breed's country of origin. [1]
- The AKC breed page lists 2 recommended health screenings for breeding dogs, such as Ophthalmologist Evaluation, Primary Lens Luxation (PLL) - DNA Test. [1]
Good fit for
- ✅ First-time trainers who want an eager learner (AKC trainability 4/5)
- ⚠️ Think twice: Close neighbors or thin walls: AKC rates barking 4/5
Common questions
How long do Sealyham Terriers live?
The AKC lists a life expectancy of 12-14 years.
How big does a Sealyham Terrier get?
AKC breed information lists height 10.5 inches and weight 23-24 pounds (male), slightly less (females).
How much are vet bills for a Sealyham Terrier?
Breed-specific bills are rare, so VetReceipt groups dogs by size. For small dogs like the Sealyham Terrier, a typical vet bill runs $273 – $1,110 (median $508). The AKC notes health screening for this breed; see the cost guides linked on this page.