The vast amount of inbreeding, carried out by people with no knowledge or expertise in the field, causes the expression of many diseases and genetic issues: respiratory problems, labor complications, severe pelvic pain, arthritis, limping, and even loss of function in the legs.
Other genetic abnormalities cause the dogs to have problems such as massive intracranial pressure, serious neurological problems, severe pain, allergies, aggression, epilepsy and others.
Many puppies do not survive, having been born with severe medical and behavioral problems and genetic defects. Sometimes there is no choice but to euthanize.
The breeding females suffer from mammary infections and uterine cancer. Females who are no longer fertile after constant breeding are abandoned or euthanised. Puppies not good enough for sale are abandoned. As these puppies of questionable breeding grow, it often becomes clear that they are not the kind of dog the owner thought he was purchasing.