Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

My dog is vomiting, lethargic, and won't eat for 4 days. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 3 months and 12 days old | 33 lbs

My dog is sick since 4 days. The symptoms are vomit, lethargy and loss of apetite. He won't eat at all. There is no fever nor abdominal pain. His poop is liquid and soft sometimes. Today he didn't poop at all. There is no blood in his vomit and his poop. The vomit is a green yellowish liquid. Thank you in advance

2 Answers

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 13th, 2017

Poor Hunter! He could be suffering from a severe GI infection, foreign body, or eating something rotten. If he isn't fully vaccinated, he could have parvovirus. It's extremely serious that he has had these symptoms for four days, and he needs veterinary attention now. The vet can do a physical, blood tests, urinalysis, and x-rays to diagnose what is causing his symptoms so he can be treated. He likely need a shot to stop vomiting and IV fluids for hydration, as well as any other medications the vet deems necessary. Please take Hunter into a vet now.

Vote icon

1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Andrea M. Brodie, DVM

    Veterinarian

    Published on February 26th, 2018

    It looks like your dog is a puppy. By what you describe there is a good chance that your puppy is suffering from a viral disease such as canine parvo virus infection. Vomiting, diarrhea, lethargy, not eating and drinking are typical signs, It is also likely that your dog has intestinal parasites (worms) which sometimes can show the same symptoms. You will need to take your puppy to a veterinary doctor today, as it will need fluids, antibiotics and pain medicine if it suffers from parvo, and if it suffers from worms, it will need to be wormed. You can try offering your dog boiled rice with a little bit of white chicken meat for food.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
Why is my mouse's eye swollen, cloudy, and has pus?
Is your mouse's eye swollen, cloudy, and pussy? Dr. Melanie, a certified vet, discusses severe eye issues like infection or abscess, urging an immediate visit.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
What fish dog food helps dry skin if my dog eats Science Diet?
Is your dog's dry skin a concern? A certified vet offers expert advice on finding the best fish-based dog food alternatives to Science Diet for essential oils.
Updated on February 04, 2026
Petco Pet Education Center
Food & Nutrition
What's the best way to feed my hamster when I'm going on a trip?
Planning a trip to Chicago and need to feed your Syrian hamster? A certified vet offers expert advice on feeding options for short and long trips, plus finding trusted pet sitters.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
Can chickens eat bell peppers daily and what about veggie salads?
Can your chickens eat bell peppers and salads? Veterinarian Dr. Elizabeth offers expert advice on safe feeding, frequency, and how fresh veggies boost vibrant yolks.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
My newly adopted pet won't eat hay. What can I do to encourage it?
Adopted a pet not eating hay? Dr. Stafford, a certified vet, offers expert guidance on encouraging hay consumption, including adjusting pellets and trying fresh types.
Updated on December 04, 2025
Petco Pet Education Center
New Pet
Why is my new pet biting? Is she stressed or scared in her new home?
New pet biting? A Licensed Vet Tech shares expert advice on how to gently acclimate your new companion to their home, reduce stress, and build trust. Get guidance for a happy pet.
Updated on December 04, 2025

Related Brands and Products

Dog Supplies Dog Food Dog Health & Wellness Prescription Dog Digestive Medications Wet Dog Food Electrolytes for Dogs Dog Stool Eating Deterrent Dog Vitamins & Supplements Veterinary Diet Dog Food Dog Medicine and Prescriptions Viokase-V Prescription Dog Digestive Medications Lactulose Prescription Dog Digestive Medications Metoclopramide Prescription Dog Digestive Medications Viokase-V Dog Medicine and Prescriptions Lactated Ringers Electrolytes for Dogs PetAlive Sensitive Stomach Dog Food Pumpkin Patch Up! Sensitive Stomach Dog Food Entyce Prescription Dog Digestive Medications Veterinary Diet Vetality Dog Pain Medicine & Relief
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored