A. I am not sure what your question is but I feel you are looking for maybe an answer as to why she died. 3 things immediately come to mind as possibilities. First- a trauma of some sort- fell down stairs, was accidentally stepped on, maybe she was out and was even hit by a car- this can cause bleeding from the rectum and diarrhea but usually trauma will have other signs especially of it was bad enough to be fatal. Second, an ingestion of a poison- specifically rat poison. These poisons cause rats, mice, dogs , and people to internally bleed. The bleeding from rectum, bruising and watery diarrhea could all be from that poison. Lastly, an auto immune issue that destroys platelets, called thrombocytopenia, could cause these signs and be a fatal illness. I hope this was helpful and sorry for your loss.
A. Poor dog. I am so sorry for your loss. It sounds like your pet had a bleeding disorder, possible hemophilia type disorder or a ruptured internal organ that caused massive bleeding. The bruise you mentioned was a possible sign of internal bleeding as well. For mystery deaths such as this you always have the option to get your pet a necropsy (examination of the body after death) done to determine exact cause of death. Again I am so sorry for your loss and you have my deepest condolences.
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