Q. Diarrhea in puppy 9 weeks old. What can I do
A. The diarrhea could be caused by any number of things; intestinal parasites, a bacterial infection, even being constipated will sometimes manifest as diarrhea because liquid feces is all that will get by the impacted fecal material. It could be as simple as a dietary indiscretion, meaning he might have gotten into the trash and eaten something that didn't agree with him. If your pet is otherwise feeling fine, eating, drinking and urinating, try taking away all food, treats included, for 24 hours. He can still have water. This will give the gut a chance to rest. After the 24 hours are up, introduce just a tiny amount of normal food. Wait an hour and give a little more. Keep doing this until he has had his normal amount for the morning. However, if he continues to have loose stool, or starts vomiting, loses his appetite, acts lethargic, and/or develops a fever, get him in to be seen by your vet right away as this could indicate a more serious problem.
DAVID ELBEZE, DVM, MRCVS
A. if you just got the puppy and changed his diet this could be the reason for diarrhea. Another common reason for this could be worms, you will need to de-worm him twice in 2 weeks intervals if you have not done it yet. If the diarrhea is severe and watery or with blood it might be a serious infection , parvo virus is common with puppies this age and can be life threatening. In that case I would advice going to the vet to seek medical treatment.
LINDSEY EDWARDS MVB, BSC, IVCA
A. Maintaining fluid intake with homemade, unseasoned chicken broth and or pedialyte is vital. Do not fast such a young pup but offer boiled chicken and rice in small feeds or a tinned recovery /intestinal diet. At this age his vaccines have not been completed and infectious diseases would be a huge concern - any vomiting or lethargy would require urgent veterinary treatment. A probiotic paste if he is otherwise well may help and be sure to keep up to date with worm treatments, a fecal exam would identify parasitic causes