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