The Portuguese Water Dog carries a rich tradition of nomenclature reflecting its deep cultural roots along the Iberian coast. In its homeland of Portugal, this breed is universally known as Cão de Água, which translates directly to dog of water, a name that perfectly captures the essence of this remarkable swimming breed. Portuguese fishermen affectionately referred to their working companions by this name for centuries, recognizing the inseparable bond between these dogs and their aquatic duties.
The abbreviated form PWD has become the standard informal designation among English-speaking enthusiasts, breeders, and owners worldwide. This shorthand appears frequently in breed publications, kennel club documents, and casual conversation among those familiar with the breed. The nickname Portie has also gained widespread acceptance, particularly in North America, offering an affectionate diminutive that reflects the close relationship owners develop with these charismatic dogs.
Historically, regional variations in Portugal produced slightly different names for dogs working in specific coastal areas. The breed found particularly strong representation in the Algarve region of southern Portugal, where fishing traditions ran deepest and the dogs proved most essential to daily operations. Local fishermen sometimes referred to their dogs using terms specific to their villages or fishing communities, though Cão de Água remained the universal identifier understood throughout Portuguese coastal regions.
The breed's recognition by major international kennel organizations has standardized its official designation while preserving historical naming conventions. The American Kennel Club, which granted full recognition in 1983, uses Portuguese Water Dog as the official breed name, establishing the standard that most English-speaking countries have adopted. The Kennel Club of the United Kingdom similarly recognizes the breed under this name, maintaining consistency across major English-language registries.
The Fédération Cynologique Internationale maintains the Portuguese designation Cão de Água Português as the official breed name, honoring the breed's national heritage while providing the international community with the authentic Portuguese terminology. This practice acknowledges Portugal's ownership of the breed standard and the country's role in developing and preserving these remarkable water dogs over centuries of careful selection.
Canadian and Australian kennel clubs have aligned their nomenclature with North American and British conventions, using Portuguese Water Dog as the recognized breed name. This standardization facilitates international breeding programs, show competitions, and health registries that require consistent identification across national boundaries. The breed's relatively recent introduction to many countries outside Portugal has meant that naming conventions established by early importers have remained largely unchallenged.

