Symptoms of hyperthyroidism in dogs may be different, but the following are common symptoms:
1. The dog's appetite increases.
2. Dogs lose weight
3. Dogs have common skin problems
4. Dogs may be too active.
5. Dogs may have tachycardia.
6. Dogs may show nervousness.
If you find that your dog shows one or more of the above symptoms, you'd better contact your veterinarian for examination immediately. In addition, if the dog is found to grow too fast, it may also be a sign of the disease, so it is very important to go to the vet for examination in time.