Ticks and heartworms are more than routine nuisances. They threaten vital organs, drain energy, and can lead to long-term complications. That is why veterinarians emphasize tick and heartworm prevention for dogs at every checkup. Preventive care acts as a safety net, sparing pets from painful treatments and giving owners peace of mind. Many pet owners believe that because their dog looks strong and active, they are safe from parasites. The truth is, these threats often remain hidden until damage is done. A tick can pass on bacteria before you even notice it on your dog’s coat. Heartworms can grow for months inside the body without showing signs. Preventive care closes the door before parasites ever get a chance to cause harm.