Companion Animals

Dog Thyroid Disease Welfare and Management

Hypothyroidism is common in middle-aged dogs, causing lethargy, weight gain, and skin problems that significantly reduce quality of life but respond well to treatment.

Key Facts

Hypothyroidism affects 1-2% of dogs, most commonly Golden Retrievers, Dobermans, and Boxers
Clinical signs include weight gain, lethargy, cold intolerance, and skin and coat changes
Daily levothyroxine supplementation restores normal thyroid function
Response to treatment is typically visible within 4-6 weeks
Untreated hypothyroidism may progress to peripheral neuropathy and cardiovascular disease

Welfare Considerations

Hypothyroid dogs experience significant welfare loss through lethargy, cold sensitivity, and skin discomfort. Many owners normalise these changes as normal ageing. Early diagnosis and treatment restores energy and wellbeing, dramatically improving quality of life. Treatment is inexpensive and highly effective.

What You Can Do

Have dogs over 5 years screened for hypothyroidism at annual wellness checks
Seek veterinary investigation for weight gain with normal appetite or unexplained lethargy
Administer levothyroxine consistently at the same time each day for best results