The Jacairn dog is a cross between a purebred Jack Russell Terrier and a purebred Cairn Terrier. These dogs are called hybrid dogs due to their origination from two different breeds.
The Jacairn is small size dogs that stand at a maximum height of 15 inches and have weight around 18 pounds. These designer dogs are charming, loving, affectionate and obedient but can be willful at times specially if any leniency on owner's part is shown.