For example, the percentage of Dalmatians that are deaf much higher than any other breeds. This is why there are breeds that are prone to have certain health problems that other similar dogs almost never get. This, unfortunately, resulted in genetic diseases being passed on. However, in recent years many more breeds have been selected based on their appearance. Irresponsible breeders have found themselves with high demand and have started breeding puppies with very little controls. However, sometimes purebreeds have genetic diseases. During the last century, there has been an explosion of purebred dogs, whereas until the 19th Century certain breeds only existed to serve a particular working function. This genetic selection process manages to boost the traits that people want. In these cases, their appearance isn’t really that relevant but all are physically similar. The traits that breeders want could be anything. Many current breeds are selected based on their appearance, but some breeds have also been bred for their intelligence (such as the Border Collie or German Shepherd), speed (Greyhounds), or their personality (Labrador). This is how all dog breeds were created, from the first primitive breeds to the more modern ones. This means the dogs with the most desirable traits are selected to reproduce. Through the generations, these traits define the breed. The creation of Purebred dogs consisted of using genetic selection. By contrast, people often say that mixed-breed dogs are healthier and don’t have any genetic problems. So, are mixed-breed dogs really healthier? Hereditary Diseases in Purebred Dogs Many people already know that there are dog breeds that have hereditary conditions.

Mixed breed dogs are healthier