As a breed, BTs are generally healthy. A good diet, proper weight, plenty of exercise, regular grooming and routine veterinary care should keep a BT in good health. One of the reasons the BT is a fairly healthy breed is years of concerned, responsible breeding. Conscientious breeders screen for hip dysplasia and eye problems. Clear dogs can be registered with OFA(hips)and CERF(eyes). Other genetic problems that may occur are heart defects, hypothyroidism, seizures, allergies, malocclusions, luxating patellas and undescended testicles. These defects have not become widespread, however, because of careful, selective breeding by Border Terrier breeders.