Hello, I am sorry to hear you are worried about your poodle
. My name is Rebecca. I am a veterinarian and will do my best to help. I am worried if she has not eaten or drunk much for 3 days. She may be dehydrated. If you check her gums, are they pink in color or do the gums seem pale? If she is not vomiting, it could be pancreatitis, but usually there is vomiting with that condition. She could also have liver disease, kidney disease, cancer, infection, diabetes
, intestinal disease. Try to get her to take fluids, broth or water or ice chips or Pedialyte, to keep her from being dehydrated. If she has pancreatitis, pain medication might help if you have any safe for a small dog from previous prescriptions for her. She really needs an exam: palpate lymph nodes and internal organs, take her temp, check her gums, listen to her heart and lungs with a stethscope, to try to find where the problem is. Since she is older, this illness could be her final illness, but you don't know that for sure until you get a diagnosis and that means starting with an examination. Try to keep her hydrated, take her temp if you can, and tell me if you think her gums look pink or pale. Let me know what other questions you have.