The Bolognese is a hardy little dog, and unlike many other purebred dogs, they do not suffer from many of the hereditary and congenital health problems that many other purebred dogs suffer from. Health problems that most affect the breed include: Hip dysplasia, Patellar relaxation – dogs can be tested and assessed through the Animal Health Foundation, Vision problems – dogs can be screened on a BVA scheme. , Legg-Calves-Perthes disease Dental issues