Unfortunatly, the most common causes of puppy vomiting and lethargy are also almost always life threatening. Parvo virus, and intestinal blockages are among the most common. Your puppy WILL need to see a vet pronto. Please let me know where you live so I can recommend low cost options. You may need to consider surrendering your puppy to your closest ASPCA or Humane Society, so it can recieve proper treatment.


