2001-Sat Feb 25 15:38:18 MST 2017
Vetstreet. All rights reserved.
Vetstreet does not provide medical advice, diagnosis, or treatment. See Additional Information ›
Although our feline companions can suffer from
hyperthyroidism, the majority of dogs with thyroid problems will have the opposite condition — hypothyroidism.
Hypothyroidism occurs when the thyroid glands do not produce enough thyroid hormones. If a
dog is hypothyroid, there is a very slim possibility that a tumor is present. However, in most cases, it is simply a dysfunctional thyroid gland.
As with feline hyperthyroidism, the symptoms of canine
hypothyroidism vary widely, but the most common are
weight gain, hair loss or poor haircoat, rough or scaly skin and lethargy. Breeds particularly at risk for this disease include
Golden Retrievers and
Contact your veterinarian if your pet is exhibiting any of the following symptoms:
In some dogs, thyroid tumors are the cause of the
thyroid imbalance. The tumor is often found by palpation first. The owner may notice a swelling in the dog’s neck, or the veterinarian might discover it during a
The thyroid glands are located on each side of the dog’s trachea. If only one thyroid gland becomes
cancerous, the dog may have normal thyroid production and only
exhibit a mass in the neck. If left unchecked, the lump can grow quite large and can invade the neck muscles, larynx, esophagus or even the lungs. Symptoms may include a cough or problems swallowing. Fortunately, only one gland is usually compromised by the tumor, and some thyroid tumors can be removed.
Canine hypothyroidism can be a subtle disease. Symptoms appear gradually and dog owners may mistake their dog’s lethargy, weight gain and
signs of aging rather than hypothyroidism.
Dogs with hypothyroidism are typically middle aged.
Seven years is the average age of onset, and testing dogs with clinical signs is essential.
Like this article? Have a point of view to share? Let us know!
Take our breed quiz to find your next pet.
Get all the best pet news and information sent right to your inbox!
Thank you for subscribing!
Dogs and cats help improve our mental,
social and physical health — and we
have the science to prove it!
We asked our readers to share the funny
things and skillful tricks their dogs will do
to get Milk-Bone® Pill…
It’s more than just cute when your kitty
naps in a box — it’s an instinctive
behavior that’s hardwired in her…
Herding dog, search-and-rescue dog, guide dog, police dog, farm dog — you name it, the German Shepherd can do it.
Check out our collection of more than 250 videos about pet training, animal behavior, dog and cat breeds and more.
Wonder which dog or cat best fits your lifestyle? Our new tool will narrow down more than 300 breeds for you.
If the video doesn't start playing momentarily,
please install the latest version of Flash.
Thank you for subscribing.