Heartworm disease causes heart failure. It is transmitted by mosquitoes. Any exposure to mosquitos = risk of heartworm disease. Since there are many mosquitoes in Michigan, heartworm disease is very prevalent among pets that aren’t given preventative.
At your first puppy visit, your puppy receives a FREE dose of Heartgard Plus. Each month after that your puppy should be weighed and appropriately dosed with a form of heartworm preventative.