Certain breeds of dog are more susceptible to certain illnesses and diseases than others. These can include respiratory issues, eye problems, autoimmune disorders, joint problems such as hip dysplasia, epilepsy, and heart conditions.
Fortunately it is now possible to DNA test dogs to identify whether they are carriers of a specific disease. Reputable breeders use health testing to ensure they only breed from dogs without these significant health problems. Canine genetics is a complex subject, but in summary, if both the puppies parents are genetically clear of a particular disease, the puppies are not at risk of developing these inherited conditions.
All litters that are displayed on puppy choices have had the health test status of the parents checked against the Kennel Club database. This is one of the reasons we make sure that only breeders with kennel club registered dogs are allowed to join our site.