Why is my puppy vomiting and has diarrhea after eating new food?

Question

My puppy is 3 months old, he had his first puppy shots on the29th. I recently changed his dog food the day before yesterday and we have been giving him rawhides (bully sticks and new treats) he has been fine but he has had more frequent bowel movements and it has turned to diarrhea today and he vomited twice today, once food, and once foam. He’s very sleepy and I’m concerned. He won’t eat anything but he will drink water. Pet's info: Dog | Mixed Breed | Male | unneutered | 2 months and 30 days old | 9 lbs

Ana M, DVM · Accepted Answer

Thank you for submitting your question regarding Pj. I'm sorry to hear that he is experiencing vomiting and diarrhea. If a dog is going to suffer a vaccine reaction, it typically occurs the same day as the vaccination. So this is likely unrelated. He may be experiencing GI upset secondary to all the new treats. I would stop those for now. Being so young and small, he should see his veterinarian if symptoms persist. In the meantime, encourage him to eat and drink small amounts. It will be easy for him to become dehydrated at his size. I hope this information helps!

Why is my puppy vomiting and has diarrhea after eating new food?

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