Sadly, some of the testing is only good for the time the test was taken, such as with SA. It is no guarantee that your dog won't break with it the very next day. A combination of testing plus clearance by pedigree can give some assurances, but not total. Many issues are polygenic and the combinations of genes that produce the issue are not known. It is also easy for breeders to overreact and erradicate entire lines and years of work based on one puppy. There is a lot that is just not known, you have to work with what is known. Poodles have their issues, but many breeds have equal or worse. One of the more heartbreaking health issues occurs in Cavaliers, which I also own. 50%of them will have mitral valve disease by the time they are 5 and nearly all of them will have it by age 10 (if they live that long). For a toy breed, their average lifespan is lucky to make 10 years old. The problem is that many do not develop MVD until after their breeding years. So while you breed perfectly healthy hearts, they may develop the disease later (or not) and produce pups who develop it before they are even 1 yr of age. It is a polygenic disease for which there is no test. I have one Cav who is now 7 who has had a murmur since he was 6 months old and never has worsened. I have another who has never had an issue, but she could develop one over night and go down quickly. It is unpredictable and an accepted hazard with the breed in general.