Preventive care such as flea, tick and heartwor are imperative to reducing (and almost eliminating!) the chance of your pet contracting a vector-borne illness. In addition to decreasing disease transmission, it also keeps those nasty things outside of your home. Some animals have severe flea allergies and flea prevention goes a long way to increasing their comfort and quality of life.
Vaccinations are also indispensable. They prevent many diseases which can be fatal. There are core vaccines which all pets should get and there are additional vaccines that may be recommended based on your pet’s lifestyle.