Diarrhea 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. This is what you can do:
1- Pepto Bismol 1 teaspoon every 8 hours for 1-2 days.
2- No food or water for 8-12 hours, need to give her gastrointestinal tract time to rest. Then, offer a 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 her regular diet.
3- Supplement with a probiotic, these are friendly bacteria that help with regularity. You can buy this over the counter in any pet store.
4- If after doing the above you do not see improvement within 24 hours I would have her checked by your family veterinarian for a hands on examination.
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