Norfolk Jack Russell cross or Norjack and a Yorkshire terrier Jack Russel cross or Yorkie Russell. . Small grey and black dog standing on the grass and white [HOST] Russell is a cross breed of Yorkshire Terrier with a Jack Russell —. Medication & Behavior: Very friendly black spots couple big black spots He is believed Yorkie. View. Calloway Mills Scottish Terrier Doormat (brown/black, 1. Yorkie Russell is a cross breed of Yorkshire Terrier with a Jack Russell. Small grey and black dog standing on the grass and white flowers. Aislinge Bray Terrier's Aine is a small female Black and Tan Jack Russell Terrier who was imported from Ireland. Description: Black with brown. White and black dogs on the grass with dark background. Jack Russell terrier mix. —. Small grey and black dog standing on the grass and white [HOST] Russell is a cross breed of Yorkshire Terrier with a Jack Russell. If you're a fan of the Jack Russell Terrier, you're sure to love this list of Jack Russell mix-breed dogs.