Friend, if the Baytril were for her weight this will not be toxic or life-threatening for her. She could, however, develop vomiting or diarrhea. I would keep an eye on her for the next 24 hours, if she develops vomiting or diarrhea this is what you can do:
1- Do not give things like Pepto Bismol or Imodium.
2- No food or water for 6-8 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. Keep her indoors in a cool room and no exercise when fasting.
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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