like they said only a necropsy would tell, but it is possible that he may have had cardiac arrest
I'm sorry about the death of your dog too. A necropsy would be the only way of finding out for sure what killed him. But you may well not feel like having one done.
I do not mean to worry you, but just thinking.....Were there any signs he had vomited or was there anything untoward about his body? Anything at all unusual? The only reason I ask is in case he had got into anything very toxic. I was just thinking about your other dogs.
He was very young to die, and it is sad. Your others will miss him. Try to keep the routines and their everyday life and play as normal as possible. While dogs do grieve the loss of a family member, they will be much cheered up by all their routines and games.
I am very sorry. Please accept my condolences.
I am very sorry to hear about your dog. I do not know what might have caused your dogs death. If your dogs were not vaccinated, there could be many diseases that might have caused your dog to die.
I wish I could be of more help, but there is simply no way for anyone to know what happened to your dog, unless you bring your dog to the vet to get a necropsy..(autopsy) performed.
If your other dogs start to act sick or strange, please bring them to a vet to get checked out.
Again, I am sorry about your dog...please accept my heartfelt sympathy.
Bless your dogs beautiful spirit and soul....
Connie