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Hello, this is Dr. Jess. I am sorry to hear about your puppy! How long has the diarrhea been going on for now? Has she been to a vet since this started and had any fecal testing done? Diarrhea in puppies is common and most often due to GI parasites such as worms or protozoal organisms like coccidia or giardia, and in her case since she was on a raw diet I would also be concerned about bacteria. The safest thing to do would be to bring her and a stool sample in to her vet to have it tested. In the meantime, I would also suggest starting her on a probiotic, which can help restore the normal healthy bacteria that live in the GI tract.
Most of the pet stores now carry probiotics, and most vet clinics will also carry a probiotic that you can use for your pup, such as FortiFlora which is made by purina.