Labrador has bloody stool and mucus after antibiotics. What's wrong?

Thanks for using Petco Pet Education Center, formerly Petcoach! Vomiting and bloody stools can occur from many conditions such as foreign body ingestion and obstruction, pancreatitis, gastroenteritis, dietary indiscretion, among other possibilities. If he is having seizures that make this very serious as this is possibly unrelated and could be seen with conditions such as low blood sugar from vomiting, brain inflammation, epilepsy, among other possibilities. I recommend that you have Bruno evaluated by your veterinarian for further assessment and treatment. This will likely require bloodwork and abdominal imaging in terms of diagnostics and possibly an MRI. Treatment would be based on findings. At the very least your veterinarian could start him on medications to make him feel better. In the meantime, keep water available at all times to try to prevent dehydration. Good luck and have a good day!

I am So sorry to hear that Russel has been so unwell. I am happy to hear his respiratory issues are resolved. It is possible that the same infection has affected his gastrointestnal tract, that the antibiotics themselves have upset his natural gut flora, or even that it’s all coincidence and Russel simply ate something he should have. From what you are describing, a liquid bowel movement which has fresh blood in it, it sounds as though Russell has colitis, or inflammation of the last portion of the large intestines. There are several causes of colitis in dogs, ranging from bacterial infections, parasite infestations, IBD, stress, or ingestion of contaminated food. Since you have only noticed these issues for a day I would continue to monitor Russell at home. Provide a bland diet of boiled boneless chicken breast and white rice and plenty of fresh water. You can also add cooked mashed skinless sweet potatoes to help with the diarrhoea, a dog formulated probiotic, and low sodium chicken broth to help with fluid intake. If the episodes continue, if Russel becomes depressed, passes large amounts of blood, vomits, or seems very uncomfortable take Him to see his vet immediately. I hope this answer was helpful and more importantly that Russel feels better soon. Warmest regards to you both.

Thank you for using Petco Pet Education Center, formerly Petcoach, Sabina! I can see that Oliver has severely bloody stool. This can be caused by imbalance of the bacteria in the gut due to the antibiotics, if they have been given for another condition. This can also be caused by severe parasitic infections, bacterial infections, and conditions such as inflammatory bowel disease. I recommend having Oliver seen by the vet who prescribed the antibiotics, as they may recommend a probiotic to add to his treatment, or discontinue/switch the antibiotics.

Hi there! Sorry to hear that Bruno is not feeling well. The clinical signs you describe are concerning when they occur in a puppy as they can be seen with serious gastrointestinal infections such as Parvovirus. Other possibilities include intestinal worms and dietary indiscretion, among other possibilities. The sooner these conditions are treated the better the outcome tends to be. For this reason, I recommend that you have Bruno evaluated by your veterinarian to check for these possibilities and to start therapy based on findings. At the very least they can address dehydration if present and start him on anti-diarrhea medications. Good luck! Keeping my fingers crossed for your boy!

From the picture it does not look like there is blood in Bruno's stool. The stool does look a little loose/unformed which could indicate colitis. Colitis is an inflammation of the colon and could be caused by many different things such as intestinal parasites, inflammatory bowel disease or a food allergy/intolerance. Severe diarrhea can cause weight loss, malnutrition and dehydration. I would recommend having a fecal performed at your vet to rule out intestinal parasites. If the diarrhea becomes worse then you may need to bring Bruno in to be evaluated. He may need a diet change or antibiotics or probiotics to help clear up the soft stools.

Riley’s stool looks a bit soft. This may be be from being on doxycycline as antibiotic associated diarrhea is fairly common. Your vet may be able to dispense a probiotic such as FortiFlora or Proviable that can help return the stool to normal. The blood may be due to stress colitis. Typically, metronidazole (flagyl) is an anti-inflammatory antibiotic for the gut that recommended for blood tinged soft stool, however as she just finished a course of antibiotics, putting her on probiotics and a plain boiled rice and chicken diet (unless she has an allergy to chicken) or a prescription Hills intestinal diet or Royal Canin Gastrointestinal diet for 3-5 days may be enough to allow the irritated intestinal mucosa to heal. Good luck!

Hello, sorry to hear about Lily. Amoebiasis can cause bloody stools on its own, additionally, antibiotic administration may cause diarrhea as well. It could be that she will continue to have mild GI sings for a few more days while she is treated for her disease. If you note that the blood in the stools is getting worse I would recommend having her re-evaluated. Otherwise, if the blood in stool is improving then you don't have to bring her back to your veterinarian. Hope this helps and best of luck.