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Does vomiting worms mean infestation?

Updated on February 18, 2012

If you see the dog vomiting worms it is for certain, the pet has intestinal parasites. And the infestation may be too bad to cause the dog to vomit. This is a wakeup call for you. Take the pet to a vet ASAP!

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Why do dogs vomit worms?

Dogs normally excrete worms through the feces but the worm can be vomited too especially if the dog has a serious infestation. Adult dogs may also vomit worms but vomiting worms usually happen in puppies and the worm vomited is most likely roundworms. Heavy infestation will cause worms to create an intestinal blockage that will result to vomiting.

How do dogs get worms?

Puppies are adorable bundles of fur. A waddling pot bellied puppy is an amusing sight. However, the puppy’s appearance may not be due to “baby fat” but to worm infestation. Puppies can get infested by worms that the mother dog carries. Dogs can get worms from another parasite. Fleas are carriers of tapeworm larva. Dogs infested with fleas can ingest the larva-carrying parasite when they groom themselves. Worms can be transmitted by an infected dog through the feces. The larva can stay in the dirt where the dog has defecated. Dogs can get easily infected as these animals have the habit of eating dirt and feces.

Symptoms of worm infestation

Healthy dogs can get infested with worms too but because of a strong immune system, the dog may not show signs of infestation. Commonly though the worm infestation can be seen in the dog’s appearance. Weight loss, poor coat quality and a pot bellied appearance are telltale signs. The dog may have poor appetite and have low energy level. Diarrhea and vomiting are other symptoms. When the infestation gets too heavy, worms can be seen in the feces and in the vomit of the dog.

How is worm infestation diagnosed?

From the above mentioned symptoms, a dog owner would be aware that the dog is infested with intestinal tract parasites. However, some dogs would not show symptoms at all. Worm infestation needs to be addressed as soon as possible. This health concern of the pet can be easily transmitted to other pets and also to humans. Allowed to progress, worm infestation can have serious irreparable consequences. The infestation can result to the death of the pet when vital organs are affected. A pet that vomits worms is an emergency situation. A vet consultation would be necessary. The vet would usually ask for a fresh sample of the dog’s feces. The fecal sample will be examined under the microscope to determine the type of worm the dog has.


Treatment for worm infestation will depend on the type of worm. Some dog owners will diagnose and treat the worm infestation of the pet themselves. Over the counter wormers can be obtained.  However, because these medications are not formulated for the specific type of worm it would take some time before the infestation is eradicated. The best bet is to take the pet to a vet for proper diagnosis and treatment.

How to Tell If a Dog Has Worms

Worms in dog's vomit


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    • putnut profile image


      6 years ago from Central Illinois or wherever else I am at the moment.

      gross, but necessary info.


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