The Japanese Chin is a fairly healthy breed with a typical life expectancy of 10-12 years; some live to be 15 years
of age or more. The majority of problems seen in the Chin are common to toy dogs in general. Among the most common are luxating patellas
(slipping kneecaps), cataracts, and early-onset heart murmurs. Reputable breeders attempt to breed from stock that are free of major
health defects in hopes that their progeny will have a better chance at a healthy life.

In an effort to raise awareness of health problems in toy breed dogs, the Japanese Chin Club of America (JCCA) Health Committee sponsors
health clinics, inviting veterinary specialists such as ophthalmologists, cardiologists, and orthopedists to examine breeding stock. The club also raises
money from its biannual auctions for the purpose of improving the health of the Japanese Chin.

New Approach to Vaccination of the Canine

For years, it was believed that annual vaccinations for viral diseases were necessary to keep our beloved companions out of
harm’s way. But we have recently come to a turning point in vaccination of the canine. While we are grateful for protection
from diseases such as distemper and parvovirus, there is growing realization that vaccination is not always benign.

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Endocardiosis In The Toy Dog (Mitral Valve Disease)

Atrioventricular Endocardiosis, or Myxomatous Valvular Disease, is a chronic degenerative disease affecting the mitral and
tricuspid valves of the heart. It is the most common cardiac disease in small-breed dogs, and has a hereditary predisposition.

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Cataracts in Canines

A cataract is any opacity in the lens of the eye or the lens capsule. The cause, size, location and severity of a cataract may
vary. They can be caused by trauma, inflammation, diabetes or other metabolic disease, retinal atrophy, persistent pupillary
membranes, hyaloid remnants, nutritional deficiencies, congenital abnormalities, or heredity.

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Primary Epilepsy in the Toy Dog

Primary Epilepsy is a disorder of the brain characterized by recurrent seizures.

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Atlantoaxial Subluxation

Atlantoaxial Subluxation is an instability of the first and second vertebrae in the neck.

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Heart-Screening in the Japanese Chin, Cavalier and English Toy Spaniel

List of board-certified veterinary cardiologists by state (also includes Canada, Brazil, Switzerland).

Japanese Chin Coat Color Study

By Leanne Bertani, Adrienne Wilder, and JP Yousha. Published in the December 2007 Chin Chit Chat.

If you have specific questions, comments, or suggestions, please feel free to contact the health committee at

We encourage all breeders to register their dogs with:
The Orthopedic Foundation for Animals

We support the research of the: