Cairn Terrier should weigh 14 pounds and stand 10" at the withers. Females should weigh 13 pounds and stand 9.5" at the withers. A Cairn's appearance may vary from this standard. It is common for a Cairn to stand between 9 and 13 inches (23-33 cm) at the withers and weigh 13 to 18 pounds (6 to 8 kg). European Cairns tend to be larger than American Cairns. Due to irresponsible breeding, many Cairns available today are much smaller or much larger than the breed standard. Cairns that have had puppy mill backgrounds can weigh as little as 7 pounds or as much as 27 pounds.
Cairn Terriers are adventurous, intelligent, strong, and loyal. Like most terriers, they love to dig after real or imagined prey. Cairn Terriers have a strong prey instinct and will need comprehensive training. However, they are intelligent and, although willful, can be trained. Training of the Cairn Terrier has the best results when training as a puppy, as they become unwillfully stubborn. Although it is often said that they are disobedient, this is not the case provided correct training is applied.
Cairns are working dogs and are still used as such in parts of Scotland. Cairn Terriers generally adapt well to children and are suitable family dogs.
These dogs are generally healthy and live on average about fifteen years. Yet breeders, owners and veterinarians have identified several health problems that are significant for Cairns. Some of these diseases are hereditary while others occur as a result of nonspecific factors (i.e. infections, toxins, injuries, or advanced age).
Some of the more common hereditary health problems found in the Cairn are:
▪ Cataracts
▪ Ocular Melanosis
▪ Progressive retinal atrophy
▪ Corneal dystrophy
▪ Krabbe disease (Globoid cell leukodystrophy)
▪ Hip dysplasia
▪ Legg-Calvé-Perthes syndrome
▪ Craniomandibular osteopathy (Lion Jaw)
▪ Von Willebrand disease
▪ Hypothyroidism
▪ Portosystemic shunt
▪ Luxating patella
▪ Entropion
Currently, the Cairn Terrier Club of America along with the Institute for Genetic Disease Control in Animals maintain an open registry for Cairn Terriers in hopes of reducing the occurrence of hereditary diseases within the breed. Breeders voluntarily submit their dogs' test results for research purpose, as well as for use by individuals who seek to make sound breeding decisions.