The reason I'm looking into it is I lost a young dog to either a freak accident (she ran into a tree and broke her neck) or something like a heart issue or random stroke or some sudden but never detected ailment along those lines. I did not see it actually happen, I did not see her hit a tree or drop, but was there immediately after. I have not done a necropsy yet, but heart issues may be present in the grand-sire's lines. I am curious what kind of heart issue might cause sudden death (if any) in an otherwise completely healthy young dog.
Trying to find some closure, and I have three related dogs, who seem healthy, but if this is genetic, it would be important to know. I know freak accidents happen. And that could be it. But again, if it could be genetic, I will do more testing on my related dogs.