My spayed dog's attitude changed & thyroid is low. What tests?

Question

My 4 year old Shetland Sheepdog was spayed in Feb. and her whole attitude changed. She is not the outgoing agility and obedience dog I had before the spay. Her thyroid was high normal before spay and is now low and she is on thyroid meds. Any ideas of other testing I could do would be appreciated. I need my team mate back. Pet's info: Dog | Shetland Sheepdog | Female | spayed | 4 years and 10 months old | 18 lbs

Rodrigo Roca, DVM · Accepted Answer

Hello, sorry to hear about Karma. If her thyroid was normal before her spay and it is now abnormal it could be that there is something else going on. Euthyroid sick syndrome is when they thyroid hormone is low due to a concurrent illness. Spaying your dog will definitely decreased her energy and increase the amount of weight she puts on, however it typically does not make them entirely unwilling to exercise. I would consider investigating a little further into her to rule out any other potential concurrent diseases. This may include obtaining chest x-rays, an abdominal ultrasound, and obtaining bloodwork. Ultimately, if she isn't responding to the thyroid supplementation, again, I would be less concerned that that she is a true hypothyroid dog and more so a euthyroid sick syndrome dog. Hope this helps and best of luck.

My spayed dog's attitude changed & thyroid is low. What tests?

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