| Your vet is mistaken. Also, there is no way a pinch could be guilty of causing a thyroid deficiency. If she is simply at the low end, I would suggest diet and exercise before synthroid. With no other clinical symptoms than overweight, I would not be too quick to go to meds. True diagnostic testing for thyroid takes more than one test and more than one value.
The pinch is self-limiting in how far it tightens, even when fitted properly (which is quite tight).
The only difficulty with a pinch is that if it is used without training and used improperly, the dog can learn to tolerate a higher and higher degree of discomfort. Used correctly, it is an excellent training tool.
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"The scientific name for an animal that doesn't either run from or fight its enemies is lunch."-Michael Friedman |