Basic Sciences Bldg. 2001 S. Lincoln Ave. All mammals have a thyroid gland. It is located in the neck and constantly produces thyroid hormone which speeds up metabolism.
Hypothyroidism occurs when the gland stops functioning and producing thyroid hormone.
It is one of the most common hormonal diseases. Most of the other cases are caused by a destruction of the thyroid gland by the immune system. This disease usually affects middle-aged dogs and while it is seen frequently in Golden Retrievers, Irish Setters, and Dobermans, it can manifest in any breed. It is usually not associated with other skin problems. Pet owners usually attribute many of these symptoms to the pet's aging process.