Why Is My Dog Vomiting?

If your dog vomits once or twice in 24 hours, it’s nothing to worry about. However, chronic vomiting, vomiting blood, or vomiting while experiencing other health-related issues is something to worry about. Bluegrass Animal Hospital in Knoxville looks at common causes of vomiting in dogs and puppies.



Vomiting is one of the most common poisoning symptoms, even food poisoning. Vomiting usually appears with other symptoms like diarrhea, shaking, seizures, drooling more than usual, breathing problems, mouth swelling, pale gums, and irregular heartbeat. Toxic ingestion is a medical emergency. Call our animal hospital right away if you notice any of these symptoms for emergency care.

Bilious Vomiting Syndrome

This is a common problem in older dogs caused by excess stomach acid. It’s not contagious. Your dog will vomit several times but only vomit white or yellow bile every time. Dogs need to eat to put something in their stomachs to help ease nausea and stop vomiting. If your dog has refused to eat for a whole day, call our vet team for a professional assessment.


Puppies will eat too fast and try to fit far too much food into their tiny bellies. This causes them to vomit. Dogs never quite outgrow this tendency to overeat. When a dog vomits from overeating, he or she tends to only vomit the food. Once the stomach has emptied, the vomiting stops. However, call our animal hospital if your dog does not stop vomiting or cannot keep any food down after a day. This is a sign of something more serious occurring.

Canine Parvovirus

There are many illnesses that cause a dog to vomit, but one of the most common is canine parvovirus or parvo. This is especially deadly for puppies or dogs already sick with something else. Parvo causes vomiting, vomiting blood, diarrhea, diarrhea with blood, loss of appetite, loss of energy, and abdominal bloating in dogs. There is no cure for parvo. That’s why it’s important to have your dog vaccinated for parvo.


Allergies are common in dogs. Allergic reactions can cause vomiting but usually cause other symptoms along with vomiting, like diarrhea, itchy skin, hives, chronic ear infections, runny eyes or nose, sneezing more than usual, coughing, and noisy breathing.

Visit Our Animal Hospital for Veterinary Care for Your Dog in Knoxville, TN

If your dog is frequently vomiting, vomiting blood, or showing other symptoms along with vomiting, visit us or professional care from our veterinarians right away. If you live in or around the Knoxville area, contact Bluegrass Animal Hospital at (865) 694-8387 to make an appointment for your pet today.

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7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


9:00 am-1:00 pm