How can the answer be improved?
If your pet loses weight quickly, you need to see a veterinarian. Unexplained sudden weight loss in cats and dogs can signify disease or some other health issue. Unexplained Fatigue, Weakness, or Weight Loss Chronic rectal bleeding can cause iron deficiency (anemia).
You might feel tired all of the time and have pale skin as a result. Unexplained loss of muscle mass: Does it seem like you have lost muscle mass, for reasons other than getting less exercise?
very great unexplained weight loss Jul 24, 2012 15 Cancer Symptoms Women Ignore Unexplained weight loss can be an early sign of pancreatic, stomach, esophageal or lung cancer General Cancer Signs and Symptoms. but remember that having any of these does not always mean you have cancer.
Unexplained Weight Loss What Does Bone Cancer Feel Like? A: Additional symptoms of bone cancer can include unexplained weight loss and broken bones, and unexplained weight loss