Hi All, Weird query, and i'm throwing it into the LC forum but please, if any mod would like it elsewhere, have at it! So, i have a (nearly) 3 year old dog, and like many castrated males he is showing a tendency to gain weight. He was born the runt of the litter, is very small for the breed, but is extremely healthy. However, I am wondering if he is showing some signs of hypothyroidism (low appetite, feels the cold, sleeps a lot). He is due at vets in a couple of months for his annual checkup and jabs and I intend to ask the vet to check for hypothyroidism and ask about other hormone possibilities then. My question to you all is: Do the symptoms of hypothyroidism (in humans) improve with low carb + weight loss and increased fitness? Or does hypothyroidism always require medication? He is a little chunky but has never been fat, and i have been trying to shave him down slowly. Poor lad. No matter how little i feed him, the shrinkage is agonisingly slow! He is already on a low carb, raw prey model diet (and thrives on it) He walks every day, an appropriate amount for the breed, sometimes more. He sleeps most of the rest of the time, although there is daily wrestling and playtime, including tug of war with myself, the b&w in the pic, and Mr B. I suppose i am rather reluctant to inflict this strict food reduction on him now, if it would/will get 10x easier if he gets medication for hypothyroidism... Here he is (most of what you are seeing is fluff. He really is only slightly overweight.) He is the blond. The black and white female is a typically sized for this breed - males are usually bigger that this!