Yes, dogs can vomit worms, including heartworms (though less common to see them this way) or other intestinal worms, often due to severe infestation, digestive upset, or as a side effect of heartworm treatment killing adult worms, which can cause inflammation and nausea, leading to vomiting or even coughing them up. If you see worms in vomit, collect them for your vet to identify and treat properly.
Vomiting in a heartworm-positive dog can indicate gastrointestinal upset or complications from the infection. Symptoms include bile vomiting, undigested food, and possible lethargy. Causes may involve heart failure effects or secondary infections. Immediate veterinary evaluation is crucial to assess severity.
The cough caused by heartworm disease can be one of the first signs you notice in an otherwise healthy-appearing dog. Lethargy and reluctance to exercise are common signs described in dogs with advanced heartworm disease.
Stage 4: Severe Disease and Life-Threatening Complications
The most serious stage of heartworm disease can be life-threatening. In severe cases, worms can block blood flow, leading to a sudden emergency known as caval syndrome. Immediate surgical intervention is often required to save the pet's life.
Dog Vomiting: Could Worms Be the Cause? Dogs commonly face intestinal parasites and digestive upset causing vomiting and discomfort. Vomiting in dogs can be caused by intestinal worms such as roundworms or hookworms. Symptoms include vomiting, diarrhea, weight loss, and a dull coat.
Observe your dog's vomit and/or poop. Roundworms look like spaghetti and can be found in vomit and/or poop. Tapeworms are long, flat, and segmented.
You should worry and see a vet if your dog vomits multiple times in a day, can't keep water down, shows lethargy, has diarrhea, loses appetite, seems to be in pain, or if the vomit contains blood or looks like coffee grounds, as these signal serious issues like blockage, poisoning, or illness. While occasional vomiting after eating something disagreeable might be normal, continuous or concerning vomiting requires prompt veterinary attention, especially for puppies, seniors, or dogs with existing health conditions.
How long can a dog live with heartworms? Dogs are able to live for years with this parasite, however, their condition will continuously worsen. It's a dangerous disease overall, which is why some people have even described untreated heartworms as the “slow kill.”
Also bring a fresh stool sample for them to check for the presence of worms. Finding microscopic intestinal worm eggs in the stool is the most common way to diagnose worms in dogs. Heartworms are diagnosed with a blood test, an X-ray of the chest, or an ultrasound of the heart.
The cough associated with heartworm disease in dogs is often likened to the sound of a goose honking. If your dog tends to get into coughing fits after activity or eating, and if those coughs sound harsh and honk-like, then she may have heartworm disease or another heart related concern.
When the infected mosquito bites another dog, the mosquito spreads the infective larvae to the dog through the bite wound. In the newly infected dog, it takes about 6 to 7 months for the infective larvae to mature into adult heartworms.
Anecdotal evidence suggests that herbs such as garlic, black walnut and wormwood, and the homeopathic heartworm nosode, may actually prevent as well as treat infection. Unfortunately, I have not yet been able to find substantive proof that these therapies can reliably and safely prevent or treat infection or disease.
Signs of heartworm disease may include a mild persistent cough, reluctance to exercise, fatigue after moderate activity, decreased appetite, and weight loss. As heartworm disease progresses, pets may develop heart failure and the appearance of a swollen belly due to excess fluid in the abdomen.
Stage 4: During this final stage of congestive heart failure, your dog's breathing will become difficult even when they are resting. Fluid will likely begin to accumulate in various parts of your pup's body, leading to swollen legs or abdomen, which will make walking difficult and may lead to vomiting.
Symptoms in dogs most commonly include breathing difficulties, coughing, reduced appetite, weight loss and lethargy. Symptoms in cats are similar and may include gagging and vomiting. Signs associated with the first stage of heartworm disease can often be mistaken for feline asthma or allergic bronchitis.
It is critical that your pet be kept under strict exercise restriction and confinement for 4 weeks after each phase of the heartworm treatment. Life threatening complications may arise if your pet is not confined. Specifically, your dog should not be allowed to run loose, play with other dogs, or go for any long walks.
Signs of heartworm disease may include a mild persistent cough, reluctance to exercise, fatigue after moderate activity, decreased appetite, and weight loss. As heartworm disease progresses, pets may develop heart failure and the appearance of a swollen belly due to excess fluid in the abdomen.
Coughing or Asthma-like Attacks: Respiratory issues are a common sign of heartworm disease in cats, often mistaken for feline asthma.
Abaxis Heartworm Test Kit easily detects the heartworm antigen in your pet's serum, plasma or whole blood. This rapid, at home heartworm test for dogs and cats is highly sensitive and provides fast and easy-to-read results in just 10 minutes.
In dogs, heartworm disease has four stages:
Common indicators of heartworm infection are as follows:
The presence of bile in dog vomit – characterized by yellow or green colors – is cause for concern. This could be a sign of bilious vomiting syndrome, a condition where the small intestine leaks bile into the stomach.
Speak to your GP if:
What does parvo vomit look like? Severe vomiting, bloody diarrhea, lethargy, and appetite loss are the most common symptoms of parvovirus. Puppies with parvovirus lose their appetite, often causing yellow vomit from stomach acid or white foam.