Hypothyroidism in Dogs

descriptionOverview

Hypothyroidism occurs when the thyroid gland doesn't produce enough hormones, slowing down the entire metabolism. Dogs become lethargic, gain weight despite normal eating, and develop skin and coat problems. It typically develops in middle-aged dogs (4-10 years). Once diagnosed, it's easily managed with daily thyroid medication and proper nutrition — most dogs return to normal within weeks.

searchSymptoms to Watch For

• warningUnexplained weight gain
• warningLethargy and exercise intolerance
• warningThin, dry, or dull coat with excessive shedding
• warningSkin thickening and recurrent infections
• warningSeeking warm places and cold intolerance

restaurantHow Nutrition Helps

A diet tailored to a hypothyroid dog's slower metabolism is essential. Since these dogs gain weight easily, portion control with a lean, high-protein diet prevents further weight gain. Adequate zinc and iodine support thyroid hormone production. Once on medication, many dogs can eat a normal diet — but monitoring calories remains important.

directions_runHow Activity Helps

Regular exercise combats the lethargy and weight gain of hypothyroidism. Start gently as the dog may tire easily before medication takes full effect. As thyroid levels normalize, energy returns and exercise tolerance improves dramatically.

verifiedPrevention Tips

• check_circleAnnual thyroid screening for middle-aged dogs
• check_circleMaintain a lean body weight
• check_circleWatch for unexplained weight gain combined with lethargy
• check_circleFeed zinc-rich foods to support thyroid health
• check_circleMonitor coat changes — often the earliest sign