There are several reasons why our dog can become sick. Dog health problems range from infections to cancers. All our dogs require regular medical attention to treat minor ailments. Understanding some common dog illnesses and diseases are some of the simple steps to keep our dogs healthy and minimize the incidence of issues like these. In addition, seeing your vet regularly for wellness exams can help you discover health problems before they get out of control. There are many health issues that can affect dogs and below are among the most common.