Why is my dog vomiting and lethargic after coming home from boarding?

Thank you for submitting your question regarding Kairi. She may have been stressed by her change in environment while you were out of town. This can set off a bacterial imbalance in her gastrointestinal tract resulting in vomiting and diarrhea. I recommend that she sees her veterinarian today to see if this is the case. She will likely require fecal testing and some form of treatment depending on these results and her exam findings. She may receive an antibiotic, an anti-nausea medication and possibly fluid therapy. I hope this information helps!

Thanks for using Petco Pet Education Center, formerly Petcoach! Vomiting can be observed with conditions such as gastroenteritis, pancreatitis, dietary indiscretion, gastrointestinal foreign body ingestion and obstruction, among other possibilities. For this reason, I highly recommend that you have her evaluated by a veterinarian for further assessment and treatment as soon as possible as I am afraid she is likely becoming dehydrated. They would be able to check for these possibilities and also check her hydration status and give her medications to make her feel better. Good luck!

It sounds like poor Ghost has a lot going on. I would be concerned that he contracted an infectious disease of some sort while away. Because of his age I would be most concerned about intestinal parasites or parvovirus. I would recommend taking your puppy back to the vet to be examined since his symptoms are getting worse. He may need some antibiotics, fluid therapy and nausea medication. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

I would recommend taking him to the veterinarian now. My concern is that Pepper has been vomiting for what sounds like awhile and is now lethargic and yelping. This may be pancreatitis, this can be a foreign body or it may just be a simple gastrointestinal upset. If it is something more serious it should be treated sooner than later. I hope Pepper feels better soon.

There are many causes for [vomiting](https://www.petcoach.co/dog/condition/vomiting-1/) and lethargy in dogs. Your dog could have a severe GI illness, [pancreatitis](https://www.petcoach.co/dog/condition/canine-pancreatitis), a foreign body causing an [obstruction](https://www.petcoach.co/dog/condition/bowel-obstruction-in-dogs), or may have eaten something rotten. I recommend withhold food for 12-24 hours, and then feeding her a bland diet of boiled white meat chicken and white rice in small amounts for several times a day. After a couple of days of the bland diet, you can slowly add back in her normal diet. If she continues to vomit in the absence of food, vomits the bland diet, stops drinking water and vomiting water, has diarrhea, and/or becomes very lethargic, you need to take her into your vet immediately.

Thanks for using Petco Pet Education Center, formerly Petcoach! Possible side effects after vaccines include pain at the injection site, lethargy, inappetence, diarrhea and general discomfort. I am concerned that Pepper is not drinking water and could become dehydrated. For this reason, I recommend you have Pepper evaluated by a veterinarian for further assessment and treatment. They would also be able to make sure that there is nothing else concerning going on. Pepper will likely start feeling better shortly. Good luck and best wishes!

It sounds like your dog picked up a severe upper respiratory tract infection. This could be kennel cough, but also canine influenza or pneumonia. Please take him to your veterinarian for an exam. Since he is shivering, and lethargic, this could be a life-threatening condition.