I have a suspicion it’s Covid or maybe mixed with some other canine influenza. Possible it’s a brand new variant. Cats can get canine influenza too. I think the canine influenza vaccine would help especially older dogs and those with health issues. I think the canine influenza vaccine might be in short supply still.
Asher house in Oregon got hit hard. It’s a dog sanctuary, the owner has a large tiktok following and people helped buy oxygen chambers for his dogs. Some of the dogs get acute respiratory distress syndrome (ARDS) within a couple of days. Or they seem to get better but then they suddenly get very sick again and that’s the same thing that happened with people and covid with “happy hypoxia” and then it gets worse. Poor dogs probably get fibrosis in the lungs from the scars.