Hypothyroidism is a condition caused by a deficiency in the hormones produced by the thyroid gland. Thyroid hormones influence most of a dog's body systems, and the most common symptoms of hypothyroidism are weight gain, intolerance to cold, lethargy, skin problems such as hair loss and infections, and reproductive and nervous system abnormalities.

Hypothyroidism is believed to be the most common endocrine disorder in dogs. All dogs can be affected by hypothyroidism, but some breeds are believed to be predisposed to the condition. The causes of hypothyroidism include inflammation (thyroiditis) or progressive failure (atrophy) of the thyroid glands. In rare cases, thyroid tumors may cause hypothyroidism.


02138: Development of Accurate Diagnostic Tests for Canine Hypothyroidism
Principal Investigator: Dr. Jan A Mol, PhD; University of Utrecht
Total Grant Amount: $48,195; Grant Period: November 1, 2014 - April 30, 2016


Lead Sponsors ($25,000+)

Treeing Walker Breeders & Fanciers Association

Sponsors ($2,500+)

American Shih Tzu Club, Inc.
Great Pyrenees Club of America
Tibetan Terrier Club of America/Tibetan Terrier Health & Welfare Foundation

Educational Resources

Hypothyroidism in Dogs from the American College of Veterinary Internal Medicine

Thyroid testing and breed statistics from the Orthopedic Foundation for Animals

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