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My puppy is throwing up, lethargic, and not acting right. What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Jack Russell Terrier | Male | unneutered | 5 months and 13 days old | 10 lbs

My 4 month old jack Russell terrier puked 2 nights ago and it was white. Last night he puked and it was brown was stuff in it. This morning he is not acting like himself and is being very slow and non-energetic... I’m not sure what’s wrong or what I can do

1 Answer

Most Helpful Answer

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Answered By Steve Popish, DVM

Veterinarian

Published on November 5th, 2017

Good question. Vomiting in young puppies usually indicates either a transitory stomach or intestinal upset or possibly a viral infection, especially if your puppy has not had any puppy vaccinations. Due to the small size of this puppy, I feel you should seek out your local veterinarian or emergency veterinary service in order to have him examine and treated as soon as possible. Hopefully its just a simple intestinal upset from eating something besides his pet food. If not, your veterinarian will run diagnostic tests to rule out specific diseases and provide therapy to rehydrate and support him while he is recovering. Be sure to continue to gather information regarding Bo's vomiting, if it continues, before you have him examined. In addition, check around the house to be sure Bo hasn't chewed up and eaten any foreign materials. Glad you reached out to us for advice as I feel you should try to have Bo looked soon in order avoid complications such as dehydration, Thank you and all the best to you and Bo. Steve Popish, DVM.

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