Hypothyroidism in Dogs

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What is Hypothyroidism in Dogs?

Hypothyroidism: is a very common endocrine disease where the body produces an abnormally low amount of thyroid hormones.  Usually is caused by inflammation or shrinkage of the thyroid gland.

Your thyroid gland is the most important gland in your body, when not functioning correctly it will throw every organ in your body out of whack.

The reason why I am writing this article is due to my little baby Bridgette of Maltesestarz.com has just been diagnosed with this disorder.

Although I have been informed that this is a common problem in dogs, I want to pass this on to anyone that has a pet to be aware and to understand more about Hypothyroidism in dogs.

The gland (thyroid gland) is found in the neck of humans and Dog-thyroid-Gland1animals that secretes glands responsible for our pets metabolic rate, calcitonin, and others, is an essential gland in the body, which produces a number of hormones, including (liothyronine) T3 and (levothyroxine) T4, both of which are required for the group of processes that involve the use of nutrients by the body to be normal.

It has been said that dogs suffer from a low thyroid hormone level for years without treatment before being detected.

I am not sure how long Bridgette has had this problem, but I can say when I noticed a recurrence of skin lesions on her skin, I immediately made an appointment with our veterinarian.

Let me explain, the first time I noticed sores on her skin was the same time I introduced her to the treadmill.  So I blamed it on her collar that maybe had rubbed around her neck because that was the only area the sores where, although I had made sure the collar was not tight, that was all I could come up with at the time. So I administered some antiseptic cream for days and they healed in no time.

A few weeks later I noticed them back again and mostly they were at her throat area under her chin and under her one ear.  I made a vet appointment that day….

Hypothyroidism rarely occurs in cats, and usually effects mid to large sized breeds in dogs.

Here is a list of Symptoms to watch for; I outlined in red what I noticed with my little lady, Bridgette

  • Lethargy/mental illness
  • Generalized weakness
  • Inactivity
  • Unexplained weight gain
  • Ear infections, (Bridgette had only minor sores in her one ear)



  • Puffy face, tragic expression
  • Excessive hair shedding
  • Hair Loss
  • Poor hair growth
  • Dry or lusterless hair-coat
  • Excessive scaling
  • Recurring skin infections
  • Intolerance to cold
  • Slow heart rate
  • Tilting of head to one side (uncommon)
  • Seizures (uncommon)
  • Infertility (uncommon)


  • A various study of the disease is unknown
  • Congenital disease-inherited
  • Iodine deficiency
  • Cancer
  • After-effect of medical treatment, including surgery


Treatment of hypothyroidism unfortunately is by giving an oral replacement hormone for the rest of your dog’s life.

With close and daily observation, I believe that a person can detect their dog at an early stage of this disorder.  Who knows your dog better than you?

If you suspect your pet might have hypothyroidism, schedule an appointment with your vet immediately, I did!

At the time of this posting Bridgette is on the recommended dosage of 1ml. Soloxine administered by our veterinarian.




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