How long can a dog with hyperthyroidism live?

How long a hyperthyroid dog lives depends on the treatment effect; with good results and good care, the dog usually returns to normal life. The signs are clear, often with varying weight loss, bulging eyes and thyroid swelling, so it is usually caught early, and with timely treatment the dog recovers well.

But without enough treatment and if infection follows, the dog’s life may be endangered.