Heartworm, which is spread by mosquitos, is one of the deadliest diseases for dogs and cats, but also one of the most preventable. We recommend that every pet be on a monthly heartworm preventative throughout the year, including the winter months when mosquitos can hide in your home. If your dog or cat is bitten by a mosquito carrying heartworm, the larvae will be transmitted through the wound and find their way to your pet’s heart. Once there, they mature and reproduce, enlarging the heart and blocking blood flow. By the time a pet owner recognizes the symptoms of heartworm disease, such as breathing problems, a persistent cough and a lack of energy, extreme and expensive measures must be taken to save the pet’s life. Treatment can include a combination of antibiotics and injections that costs pet owners hundreds if not, thousands of dollars, and requires a pet to rest for months at time. Your dog or cat will need to be tested for heartworm disease during their wellness visit before they are prescribed a preventative.