Sealyham Terrier
![](/Images/godic/202502/09/Sealyham_terrier_2308095152.JPG")
![Sealyham House, where Captain John Edwardes originally developed the Sealyham Terrier](/Images/godic/202502/09/Sealyham_Mansion_-_geograph.org.uk_-_4361075152.jpg")
![A modern, well groomed show dog.](/Images/godic/202502/09/SealyhamTerrier25152.jpg")
![A Sealyham Terrier photographed in 1915](/Images/godic/202502/09/Sealyham_Terrier_from_19155152.JPG")
The Sealyham Terrier is a rare Welsh breed of small to medium-sized terrier that originated in Wales as a working dog. It is principally a white-bodied, rough coated breed, developed in the mid to late 19th century by Captain John Edwardes at Sealyham House, Pembrokeshire.