Friend, when we see blood in the stool it is a sign of inflammation in the colon (large intestines). The vomiting is a consequence of what is causing the inflammation. This can be caused by many different medical conditions. It will be difficult for me to determine the exact underlying cause without a hands on examination and some testing. But, common causes are: Dietary indiscretion, ingestion of a foreign body, infections, or even part of a systemic disease to name a few causes.
I would recommend a hands on examination with family veterinarian, fecal analysis, xrays and blood work as initial screening test to determine the exact underlying cause. Treatment will be based on exam and test results. In the meantime this is what you can do:
1- Do not give things like Pepto Bismol or imodium. Start her on Zantac (ranitidine) 75mg 1/2 tablet every 12 hours. You can buy Zantac (ranitidine) over the counter in any pharmacy (chemist).
2- No food or water for 6-8 hours, need to give her gastrointestinal tract time to rest. Then, offer small amount of water followed by a diet of rice (75%) and boiled boneless chicken or ground beef (25%) until the stool is back to normal then wean her back into regular diet. Keep her indoors in a cool room and no exercise when fasting.
3- Supplement with a probiotic (fortiflora), these are friendly bacteria that help with regularity. You can buy this over the counter in any pet store.
4- Follow up with your family veterinarian for a hands on examination.
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