A health guarantee is a promise made by a breeder or seller that their dog will be free from genetic defects and have good health. This means that if the dog develops any hereditary condition within a specified time period, usually ranging from one year to life-time, the breeder or seller will take responsibility for veterinary bills related to treating the condition. The purpose of this guarantee is to provide assurance to buyers that they are purchasing a healthy dog and to hold breeders accountable for their breeding practices.