Thyro-tabs can be used in both dogs and cats. Medication dosage is usually decided by examining the blood levels of thyroxine. However, the standard dose suggested for dogs is 0.1mg/10lbs of body weight and for cats, it is 0.05-0.1mg per cat. The prescription, if strictly followed, is sure to bring in evident improvement in the animals. However, animals with serious cases of hypothyroidism would require continuing the treatment for the rest of their life.