Seeing your dog panting, throwing up, and not eating can be alarming—and rightly so. While any of these symptoms alone could be harmless in certain situations, the combination of all three is usually a clear sign that something is wrong. Whether it’s an upset stomach, toxin exposure, or something more serious like organ dysfunction, quick action is important.
Dog Panting, Throwing Up, Not Eating: Why It Happens
When your dog is panting, throwing up, and not eating, it typically indicates acute physical distress. Common causes include gastrointestinal inflammation, pancreatitis, toxin ingestion, heatstroke, or systemic infection. Panting is often a response to pain or nausea, vomiting indicates something is irritating the digestive system, and a refusal to eat is a typical reaction when a dog feels unwell. Below, we’ll unpack these causes to help you better understand what may be happening.
Dog Panting, Throwing Up, Not Eating: Common Causes
Gastrointestinal Upset
Dogs frequently suffer from digestive upset due to eating something they shouldn’t—whether that’s table scraps, garbage, or a sudden diet change. Vomiting is the most obvious symptom, but panting may also occur if your dog is experiencing cramping, gas, or nausea. Most dogs with an upset stomach will refuse food, especially if they associate eating with discomfort. Mild cases may resolve within a day, but prolonged vomiting or refusal to eat for over 24 hours calls for veterinary attention.
Pancreatitis
Pancreatitis is the inflammation of the pancreas and is a common cause of vomiting, panting, and appetite loss in dogs. It can be triggered by a high-fat meal, trauma, or certain medications. This condition is especially common in breeds like Miniature Schnauzers, Cocker Spaniels, and Yorkshire Terriers. Dogs with pancreatitis may also appear hunched over, restless, or lethargic. This condition can quickly become severe, requiring hospitalization and fluid therapy.
Related: Dog diarrhea and not eating (Causes and when to worry)
Toxin Ingestion
If your dog has eaten something toxic—such as chocolate, xylitol, grapes, cleaning products, or human medications—they may begin vomiting, panting excessively, and refusing food. These symptoms often come on suddenly and may worsen over time, potentially leading to seizures or collapse. Don’t wait if you suspect poisoning—call your vet or a pet poison hotline immediately. Rapid intervention is crucial for a positive outcome.
Heatstroke or Overheating
Dogs pant to regulate body temperature. If your dog has been exposed to high heat or exertion, and is now vomiting and refusing food, they may be suffering from heatstroke. This is a life-threatening condition. Other symptoms include drooling, bright red gums, weakness, and confusion. Immediate cooling and veterinary support are essential. Flat-faced breeds like Bulldogs and Pugs are at particularly high risk for overheating.
Gastrointestinal Obstruction
If your dog has swallowed a toy, bone, sock, or any non-food object, it can cause a blockage in the digestive tract. Vomiting will occur frequently, and your dog will likely refuse food due to the pain. Panting is also common as your dog’s body reacts to the discomfort. Obstructions require surgical removal and can become life-threatening if left untreated. Signs may include bloated abdomen, straining to poop, and listlessness.
Kidney or Liver Issues
When internal organs like the kidneys or liver are compromised, your dog may feel nauseous and begin vomiting, especially after meals. Panting may result from the internal pressure or discomfort, and appetite loss is a common symptom. Toxin buildup in the bloodstream can make your dog feel very ill. If the vomiting is accompanied by yellow gums, excessive thirst, or changes in urination, blood work and a veterinary exam are crucial.
What to Do If Dog Panting, Throwing Up, Not Eating Happens
First, stay calm and assess the situation. If your dog only vomits once, and otherwise seems normal, monitor them for a few hours. Offer a small amount of water and withhold food for 12 hours before offering a bland diet like plain boiled chicken and rice. Do not give any human medications unless directed by a vet.
However, if your dog vomits multiple times, pants persistently, and refuses food for more than 12–24 hours, seek veterinary care right away. Keep a note of what your dog ate in the last 24 hours and collect a sample of vomit if possible, as it can help with diagnosis.
When to Call or Visit Your Vet
Contact your veterinarian urgently if:
Vomiting persists for more than 24 hours
Panting continues even when your dog is resting
Your dog refuses food and water for a full day
There are signs of bloating, abdominal pain, or bloody vomit
Your dog is lethargic, has pale gums, or collapses
You suspect ingestion of a toxic substance or foreign object
Time is of the essence when dealing with these symptoms—especially vomiting combined with panting and appetite loss.
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Final Thoughts
When your dog is panting, throwing up, and not eating, it’s a serious situation that deserves your full attention. These are not just signs of mild illness—they often indicate your dog is in pain, overwhelmed by nausea, or dealing with a serious internal problem.
Don’t assume it will resolve on its own. Acting quickly can not only relieve your dog’s suffering but also prevent long-term damage or life-threatening complications. Trust your instincts—if something feels off, contact your veterinarian for guidance.