The only difference between a red heeler and a blue heeler is their coat color as they’re both the same breed known as Australian cattle dogs.
Both red heelers and blue heelers have white coats at birth, which change color over time.
The coat color of a red heeler is known as ‘red speckle’. This is because their top coat and the undercoat are an orange-red color with a head that has a slightly darker color.
A blue heeler’s coat is blue-gray, sometimes with black or tan markings on the legs, chest, or neck.