Although we like to think that our best friends are lively and always looking for attention, and our dog may have health problems. Fortunately, because we have a relationship with both old and appropriated these animals domenstic dog's health is one of the best studied chapters in veterinary medicine. Most health problems in dogs are infectious diseases and their study is important, not only in terms of animals but also in public health risk. Based on selective breeding has led to the emergence of cosangvinizare increasingly more genetic diseases. In this section we will learn about the most common disease that can have our four-legged friends.