Hypothyroidism can affect dogs of all breeds including the Black Lab. If you own a Black Lab with hypothyroidism, make sure you take the time to talk with your vet extensively about treatment options and long term care. Hypothyroidism usually occurs when the thyroid gland fails to produce the needed T4 and T3 hormones required for a normal metabolism in canines. This may cause lethargy, mental dullness, weakness, weight gain and hair loss among other things. Treatment is usually given in the form of medication and synthetic hormones. A change in diet to reduce fat intake may also be required. Over time, your Black Lab’s symptoms may resolve requiring the medication and hormone dosages to be adjusted by your vet. Never adjust medication dosages yourself. Talk with your veterinary clinic Sayville, NY to learn more about the disease and how to adjust your dog’s lifestyle to better cope with the condition.