1.2 Grooming styles. Most PWDs, especially those shown in conformation shows, are entirely black, black and white, brown, or silver-tipped; it is common to see white chest spots and white paws or legs on black or brown coated dogs. Overall, white is the least common Portuguese Water Dog color, while black with white markings on the chin ('milk chin') and chest is the most common color. Many dogs have mixed pattern hair: curly all over the body but wavy on the tail and ears. However, in Portugal the breed standard does not allow more than 30% white markings. Overall, white is the least common Portuguese Water Dog color, while black with white markings on the chin ('milk chin') and chest is the most common color. Many dogs have mixed pattern hair: curly all over the body but wavy on the tail and ears.