Diagnosis of the week: Who can name this common problem dogs suffer from here in NC. ANSWer: microfilaria- the larvae form of heartworm that can be seen circulating in the blood! Remember, you normally dont see the adult worms because they live in the pulmonary (lung) vasculature and work their way into the heart which is how the dog dies normally- thus the name Heartworm. Hint** This is why we recommend year round prevention and annual testing- ask about all the different options we have! | Sta