10 1/2 in (26.7 cm)
A Sealyham Terrier stands 10 1/2 in (26.7 cm) at the shoulder. Adults (kennel club profile).
Source: American Kennel Club
A Sealyham Terrier stands 10 1/2 in (26.7 cm) at the shoulder.
Height is measured at the withers, the top of the shoulders. The head and ears extend above that line. The American Kennel Club breed profile gives 10.5 inches. The listing describes an adult dog, not a growth chart for puppies.
Ranked by the tallest height its standard names (10.5 in), the Sealyham Terrier is the joint 16th smallest of the 297 dog breeds on this site. See the smallest dog breeds ranked.
Drawn at the same 10.5 in: Volpino Italiano and Shih Tzu. Same drawing, different listings: a Volpino Italiano’s figure is the lower end of its range, a Shih Tzu’s the top of its range.
This is a published species or breed reference, not a prediction for an individual animal. Where a range is supplied, both ends appear with the reading. Shoulder height and head height are kept apart when comparing animals.
All 38 terrier dogs by height, tallest first, or every dog breed. To compare your own dog, measure it at the withers.
A Sealyham Terrier stands 10 1/2 in (26.7 cm) at the shoulder. Adults (kennel club profile).
Source: American Kennel Club
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| APA | Heightvs. (2026, October 22). How tall is a Sealyham Terrier? Drawn to scale. https://heightvs.com/how-tall/sealyham-terrier |
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| MLA | “How Tall Is a Sealyham Terrier? Drawn to Scale.” Heightvs, 22 Oct. 2026, heightvs.com/how-tall/sealyham-terrier. |
| Chicago | “How Tall Is a Sealyham Terrier? Drawn to Scale.” Heightvs. Last modified October 22, 2026. https://heightvs.com/how-tall/sealyham-terrier. |
| Link | <a href="https://heightvs.com/how-tall/sealyham-terrier">How tall is a Sealyham Terrier? Drawn to scale (Heightvs)</a> |
For the height itself, cite the original publisher as well: American Kennel Club.