There’s a neverending discussion as to what can be read from a pedigree. We don’t have any definitive answers, but would like to give some insight into what we have chosen to show in pedigrees at iwdb.org, and a general primer into the practices used around the world.
The pedigree itself lists ancestors of the dog in question. It’s the blueprint which may tell you what to expect when it comes to how the dog looks and behaves, but also which diseases you may expect and what longevity you may reasonably hope for. Pedigree-information is the most important tool you have for breeding quality dogs.
In iwdb.org there’s also tons of information that will help breeders do breedings that’s good for the breed instead of damaging it’s genetic distribution.