There is some evidence that huskies, particularly Alaskan Huskies and actual working Siberians, have much lower thyroid function than other dogs. Their thyroid levels usually have to be extremely low before they show symptoms. Some of the Iditarod vets are doing a study on thyroid function in working dogs. My Chum had no symptoms at all until the day he collapsed in harness. His thyroid function is almost non-exsistant and under exertion he simply couldn't keep up, even his heart beat was thrown off by his thyroid problems.Originally Posted by borzoimom
The test should also include TSH(which I think the Michigan State test does). In a classically hypothyroid dog, TSH should be sky high as it tries to kick the thyroid in. In some cases, like Earle's, it's low. The low TSH was our first clue as to what was wrong with Earle; all the other thyroid hormones are normal for him, but without the TSH, his thyroid doesn't know what to do with all the other stuff it produces.
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