Thyroid Issues In Dogs

Thyroid Issues In Dogs

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Thyroid issues are very common in dogs. There are two types of thyroid problems that can occur due to improper functioning of the thyroid gland. In both cases, it’s important to treat these conditions as soon as possible. Hormones affect a dog’s body in many ways, so their balance is important for the dog’s health.

What Is Thyroid Gland?

The thyroid gland is located in the dog’s neck. This gland produces the hormone thyroxine and other important hormones. These hormones are vital for the metabolism and proper functioning of the dog’s body.

Thyroid Issues In Dogs 


What Is Hyperthyroidism?

Hyperthyroidism occurs when the thyroid gland produces too much hormone thyroxine. This hormone is responsible for metabolism in dogs. Therefore, too much thyroxine in the dog’s blood will increase metabolism to levels that are extremely dangerous for dogs. 

What Causes Hyperthyroidism?

Hyperthyroidism is primarily caused by cancer or a tumor on a thyroid gland. This condition is also known as thyroid carcinoma.

What Are The Symptoms Of Hyperthyroidism?

If suffering from hyperthyroidism, your dog will exhibit some of the following symptoms:

  • Excessive thirst
  • Enlargement of the thyroid gland
  • Weight loss
  • Excessive urination
  • Shortness of breath (Dyspnea)
  • Vomiting
  • Increased appetite
  • Fast heart rate
  • Enlarged heart
  • Heart failure
  • Diarrhea
How To Treat Hyperthyroidism In Dogs?

The treatment depends on the dog’s overall condition, the stage of cancer, size of the tumor, etc. There are several methods available for the treatment of hyperthyroidism. Methods such as chemotherapy, radiation treatments, surgery are used for treatment. The vet will examine the state of the dog’s body and the progress of cancer before determining the best course of action. 

Also, the vet will prescribe medications that will manage and minimize symptoms of this condition.


What Is Hypothyroidism?

Hypothyroidism occurs when the thyroid gland produces less hormone thyroxine than it’s needed for the proper functioning of the dog’s body. The effects of this disorder on the dog’s body are substantial.

What Causes Hypothyroidism In Dogs?

In the vast majority of the cases, the direct cause of hypothyroidism is the destruction of the thyroid gland. Most commonly the idiopathic atrophy or lymphocytic thyroiditis will cause the destruction of the thyroid gland. However, in rare cases, cancer and congenital defects can also cause hypothyroidism. 

What Are The Symptoms Of Hypothyroidism In Dogs?

Hypothyroidism greatly affects the entire dog’s body and all of its systems and organs.

The most common symptoms include:

  • Obesity
  • Changes in quality, color, and density of the dog’s coat
  • Thickening of the skin
  • Lethargy
  • Issues with the reproductive system
  • Cold intolerance
  • Increased dark pigmentation in the skin
  • Substantial weight gain without the increase in appetite
  • No desire to exercise
How To Treat Hypothyroidism In Dogs?

Hypothyroidism is not a treatable thyroid issue. However, we can manage it by giving the dog replacement hormone compound to normalize the functioning of the systems and the organs. Your dog will be able to live a normal life. On the other hand, your dog will have to continue to receive these medications for the rest of his life.


Thyroid issues are common in dogs, in particular hypothyroidism. On the other hand, hyperthyroidism is rarer but more dangerous of the two. In any case, as soon as you notice some of the symptoms we have mentioned in this article, visit your vet.

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