Hypothyroidism is a common endocrine condition in dogs that significantly impacts quality of life but responds well to simple, affordable treatment.
Hypothyroidism causes insidious but significant suffering in affected dogs. The gradual onset means owners often attribute symptoms to normal aging, delaying diagnosis. Dogs with untreated hypothyroidism experience persistent fatigue, cold discomfort, and a dull mental state that reduces their ability to engage with and enjoy their environment. The excellent response to treatment makes this a highly treatable welfare problem - most dogs show dramatic improvement within weeks of starting levothyroxine. Regular monitoring of thyroid hormone levels ensures optimal dosing and prevents over- or under-treatment.