United Kennel Club (UKC)

The Smooth Fox Terrier is a lively and intelligent dog breed with a short coat, known for its fox hunting origins and playful temperament.

The Soft Coated Wheaten Terrier is a friendly, energetic breed with a distinctive soft, wheaten-colored coat.

The South Russian Shepherd Dog is a large, protective breed known for its long coat and strong guarding instincts.

The Spanish Greyhound is a slender, agile sighthound breed from Spain that was historically used for hunting and coursing.

The Spanish Hound is a medium sized hunting dog with a gentle nature, good with families and other pets.

The Spanish Mastiff is a large, protective livestock guardian dog from Spain that requires moderate exercise.

The Spanish Water Dog is a medium-sized, curly-coated breed with origins in Spain, known for its herding, guarding, and water retrieval skills.

The Spinone Italiano is a gentle and versatile hunting dog with a distinctive wiry coat that thrives in active family environments.

The Sporting Lucas Terrier is a medium sized, white and patched, working terrier from England.

The Stabyhoun is a medium-sized, versatile breed from the Netherlands that excels as a family dog and a hunter.