Canine endocrinology is the study of hormone-related functions and disorders in dogs. Hormones are chemical messengers that regulate various bodily processes, including metabolism, growth, and reproduction. Common endocrine disorders in dogs include Cushing's disease, hypothyroidism, and diabetes mellitus, which can significantly impact a dog's health and quality of life. Veterinarians diagnose endocrine disorders through clinical signs, blood tests, and imaging studies. Treatment often involves medication, dietary changes, or hormone replacement therapy. Understanding canine endocrinology helps pet owners recognize symptoms early and seek appropriate veterinary care, ensuring their dogs lead healthier lives.