Even if your pet appears to be in perfect health, annual health checks are important because many illnesses and conditions develop slowly and may not show obvious symptoms until they are advanced. Veterinarians can find early signs of disease, keep an eye on changes in weight or behaviour, and fix small problems before they get worse by doing regular checkups. The best way to keep your pet healthy for a long time is to give them preventive care. This will help you find problems when they are still easy to fix.