A cross between the blue heeler, or Australian cattle dog, and the Jack Russell terrier is known as a blue heeler-Jack Russell terrier mix. The traits of this hybrid, like those of other mixed-breed dogs, are unexpected. From its pure-bred parents, the blue heeler-Jack Russell terrier hybrid can inherit a wide range of characteristics.
Both the blue heeler and the Jack Russell terrier have compact builds and are noted for their intelligence, loyalty, and fearlessness. Furthermore, both of these breeds have a high level of activity. These characteristics would most likely be inherited by a cross between a blue heeler and a Jack Russell terrier. The blue heeler is a medium-sized dog with a shoulder height of 20 inches and a weight of more than 60 pounds. The Jack Russell terrier is a little dog with a maximum height of 15 inches and a maximum weight of 18 pounds.