One of my husky groups had an unexplained, unexpected abrupt death in an apparently healthy 5 1/2 yr old dog. First vet thought probably a heart attack. After the owner had a long discussion with vet, noting some signs of perhaps air hunger a day or two before, hey very thinks very likely spontaneous pneumothorax. Which, apparently it's more common in Huskies.

https://www.purinaproclub.com/resource-library/pro-club-updates/siberian-huskies-are-among-breeds-overrepresented-in-pneumothorax-cases

Oy, expensive. Which reminds me it's time to get Kye in and have his lungs checked out. If ever there was a dog to have something like this happen to I could imagine it being him with being on the Pred all the time.

Wow. Another husky, h2m2, with pneumothorax. Appears one sided, pictures with shaved chest and chest tube. So far, here's alive. I also remember a while back, another one, survived, had pneumothorax. Did not know this was a thing in Huskies.

It will be interesting to see how this progresses and if they can ever get enough research together to assist in preventing it. Or at least putting together one more test that reputable breeders should do for their dogs.