Cinnamon Mitt ferrets, like other breeds of ferrets, may be susceptible to heartworm disease in similar ways to dogs and cats. Talk with your vet to learn more about the disease and ways to protect your ferret. In general, heartworms are foot-long worms that can invade the heart, lungs and blood vessels of your ferret. Unlike dogs, a single heartworm can cause severe damage to ferrets. Thankfully, there is a heartworm prevention program available for your Cinnamon Mitt ferret similar to the program available for dogs and cats. Talk to your vet about placing your ferret on a prevention program. A blood test screen for heartworms may be conducted first to ensure your ferret is heartworm free. After he clears the test, your ferret will then start a monthly oral medication to prevent heartworms. Talk with your veterinary clinic Poway, CA to learn more about heartworm prevention for your ferret.