Heart murmurs are abnormal heart sounds that are caused by various types of structural defects of the heart valves and or muscular wall of the heart. Recognizing heart murmurs early and having them checked regularly for progression and initiating proper diagnostics to know when to begin treatment before there is advanced disease. Veterinarian co-hosts Dr. Roger Welton and Dr. Karen Louis delve into heart murmurs, what they are, what they mean, and how pet owners should approach them. For more contact from Dr. Roger and Dr. Karen, respectively, visit the respective blogs at Web-DVM.net and VetChick.com.