Canine Thyroid Issues

Canine thyroid issues refer to a range of health problems related to a dog’s thyroid gland. The thyroid gland is responsible for producing hormones that affect metabolism, growth and development, reproduction, and nervous system functions. When the thyroid doesn’t produce enough or too much of these hormones, it can lead to a variety of conditions known as thyroid issues.

Symptoms of Canine Thyroid Issues

The symptoms of thyroid issues vary depending on the underlying cause. The most common signs include:

  • Weight gain or loss
  • Increased appetite
  • Excessive painting
  • Hair loss
  • Skin problems
  • Lethargy

Other symptoms can include a decreased tolerance for cold temperatures, weakness or stiffness in their leg muscles, and changes in behavior such as aggression or depression. If your dog has any of these symptoms, it’s important to have them evaluated by a veterinarian.

Diagnosing Canine Thyroid Issues

In order to diagnose thyroid issues, your veterinarian will perform a physical exam as well as run blood tests. The blood tests measure the hormone levels produced by their thyroid gland. Depending on the results of these tests, your veterinarian could recommend additional testing, such as an ultrasound or biopsy of their thyroid gland.

Stages of Canine Thyroid Issues

Thyroid issues can be split into three stages: hypothyroidism, hyperthyroidism, and euthyroidism.


Hypothyroidism occurs when the thyroid gland does not produce enough hormones, resulting in symptoms such as weight gain, hair loss, and lethargy.


Hyperthyroidism is the opposite; it occurs when the thyroid gland produces too many hormones leading to weight loss, increased appetite, and excessive panting.


Euthyroidism is the normal, healthy state of the thyroid gland where it’s functioning correctly and producing the correct amount of hormones.

Treating Canine Thyroid Issues

Treatment usually involves medication to regulate the levels of hormones produced by the thyroid gland. If medical treatment is not successful, surgery could be recommended. It’s important to follow up with regular check-ups and blood tests to ensure that the treatment is successful.

Preventing Canine Thyroid Issues

There are steps you can take to help prevent thyroid issues. Make sure your dog is getting daily exercise, a balanced diet, and regular veterinary check-ups. It’s also important to be aware of any changes in your pet’s behavior or appearance. Taking these steps can help keep your dog healthy and reduce the risk of developing thyroid issues.