Lethargic dog that vommited once with dry nose and no appetite?

I understand you're worried about your dog. It's important to remember that I'm not a veterinarian and can't provide medical advice.

Here's what you should do:

* Contact your veterinarian immediately. A lethargic dog with vomiting, a dry nose, and loss of appetite could be a sign of various medical issues. Your veterinarian can assess your dog's condition and provide appropriate treatment.

* Gather information: Before calling your vet, it's helpful to note the following details about your dog's symptoms:

* When did the lethargy, vomiting, and loss of appetite start?

* How often has your dog vomited?

* What did the vomit look like?

* Has your dog had any other symptoms like diarrhea, coughing, or difficulty breathing?

* Any recent changes in diet or environment?

* Has your dog been exposed to anything unusual?

* Keep your dog comfortable. Make sure your dog has access to fresh water and a quiet, comfortable place to rest.

* Do not try to self-treat. Giving your dog any medication without your veterinarian's guidance could be dangerous.

Remember: A veterinarian is the best source of information and treatment for your dog's health.