Blue Heeler: Aussie cattle dog, solid/mottled/speckled blue coat, black/tan markings allowed, known for herding. Also called Red Heeler (red coat).
Kerry Blue Terrier: Unique curly coat, slate to light blue-gray color. Born black, changes to blue by 18 months through "clearing" process.
Weimaraners: Mostly steely gray, but some have a disqualified blue coat due to a black dilute gene. Attractive to those seeking blue dog breeds.
Rare recessive blue gene in Chihuahuas produces stunning blue coats with various color combinations, seen in both long and short-haired varieties.
Bearded collies have shaggy coats in various colors, including blue. Born darker, their coat lightens as they grow. White markings are common.
Boston terrier: Often black-and-white with a tuxedo look, but rare recessive blue coat (not AKC standard). May look blue, silver, or gray.
Italian greyhound: Graceful & petite with long legs. Sometimes sports a blue coat due to the dilute black gene. Elegant appearance.
Rare Texas dog breed, blue Lacy, developed by Lacy brothers as herding dogs in 1800s. State dog, intelligent, blue coat, and versatile. AKC not recognized.
Neapolitan Mastiff: Giant blue dog breed with an imposing frame, loose skin, and accepted blue coat color in AKC standard. Black, mahogany, tawny also seen.
Chinese shar-pei: famous for wrinkles & blue coat. All colors allowed, but must be solid/sable. Distinct blue-black tongue.