Horses are a common breed of domestic pets. They are also used for recreation purpose for humans such as for horse riding, racing events, polo, etc. They require a high degree of health care to prevent infections and disease outbreak. Some of the most prominent diseases in horses are colic, equine encephalomyelitis, azoturia, west nile virus, etc. Colic refers to a series of conditions characterized by variable degrees of abdominal pain. It is the most common digestive disorder in horses. Equine encephalomyelitis is caused by mosquitoes which carry viruses. The symptoms include lack of coordination, depression, fever, poor reflexes and a drooping lower lip. Vaccination can help in prevention of equine encephalomyelitis. Azoturial is a medical condition that affects the muscles of horses. It can result in cramping, stiffness, elevated temperature and sweat. West nile virus is caused by the bite of an infected mosquito. It can result in brain inflammation and meningitis. The symptoms include impaired vision, weakness of hind limbs, convulsions and difficulty in swallowing. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in the field of horse health care. It aims to shed light on some of the unexplored aspects of this discipline. This book will help the readers in keeping pace with the rapid changes in this field.