Overview of Canine Hypothyroidism

Dogs diagnosed with hypothyroidism, exhibit an assortment of symptoms. Warning signs indicative of this disease include behavioral changes, chronic ear infections, bacterial infections, dry skin, depression, loss of hair, decrease in heart rate, and weight gain.

Hypothyroidism is the most common hormonal imbalance diagnosed in dogs.  It is the result of an underactive thyroid gland producing too little thyroid hormone. Endocrine gland disorder is the most frequent cause of hypothyroidism.  Consequently, the thyroid gland secretes too little thyroid hormone.

Dogs between the ages of four and ten years of age are at the most risk for developing this disease.  It is more commonly found in mid to large breed dogs than smaller dogs.  Greyhounds, Irish setters, Golden Retrievers, Cocker Spaniels, Dachshunds, and Dobermans have been found to have the highest potential of developing hypothyroidism.  Mixed breed dogs are less prone to developing this condition than pure breed dogs, with spayed females showing a higher risk of development.