The following information I have found comes from this website:Īlthough Jack Russells are mostly white, the white isn't the base color of the dog - it is actually spotting. The Australian National Kennel Council states that the tan markings can be from the lightest tan to the richest tan (chestnut). Grizzle is acceptable and should not be confused with brindle.
As long as the terrier is predominantly white, moderate body markings are not to be faulted.
Unfortunately I don't know much about colour genetics so I'm wondering if anyone with a bit more knowledge is willing to help outĪKC Standard: White, white with black or tan markings, or a combination of these, tri-color. I thought it might be nice to start researching colour in the hope that one day Jeff will get to the Jacks.
