I had just taken my dog to the vet a month earlier for a regular checkup, teeth cleaning (for which she was anethetised) and the removal of a small cyst (the vet said it was kind of like and ingrown hair).
She seemed fine - eating a little less than normal, but we chalked that up to the heat.
I took her out for a walk early in the morning and she was walking so slow (very much not the normal for her).
I kept trying to get her to speed up, but I stopped for a minute, kneeled down and noticed that the hair on her back and the back of her neck was standing up as though she sensed danger. I scratched her back really good, talked to her, hugged her and tried to calm her down. I stook back up and decided to turn around and take her back home.
We were only about a block from home, so we hadn't walked that far. We got about two houses away from ours and she just laid down in the road. I tried to pick her up, but she was too heavy and just dead weight, her breathing was really fast and she had peed on the road. My husband came and got us and we lifted her into the car with a sheet.
We took her home, and took her in the back to try and calm her down (still thinking, maybe she just fainted or something). She seemed to kind of come back to us, and she finally started walking a little, but her breathing was still really fast and I just knew that this was the end but just kept trying to think maybe it wasn't. I went inside to get dressed to take her to the emergency vet and when I came back out, she had just laid down and died. Blood was all around her nose and mouth. I don't understand what could have happened? She had been coughing a little bit after the surgery, but I called the vet and they said that dogs normally cough after surgery because of the procedure and just to call if it got worse, and it didn't. She showed no other signs leading up to this. It was completely a shock.
Can you help me to understand why she died?