Do Cats Poop Out Live Worms After Being Dewormed?

As a devoted cat owner, it’s crucial to prioritize your feline friend’s well-being. One of the most critical aspects of pet care is deworming, which helps keep your cat healthy by eliminating internal parasites. However, you may be wondering if your cat will poop out live worms after being dewormed – a question that can be concerning for both new and seasoned cat owners and raises doubts about the effectiveness of deworming treatments.

As we all know, cats are susceptible to various worm infestations, including hookworms, roundworms, tapeworms, and whipworms – all of which can harm their health. Deworming involves giving medication to treat or prevent these parasitic infections.

In this blog post, we’ll answer the burning question: do cats poop out live worms after being dewormed? We’ll also cover how deworming works, the different types of worms that can infect your feline friend, signs of worm infestations to watch out for and whether deworming can effectively eliminate these internal parasites.

We’ll debunk some common myths surrounding deworming and provide you with the essential information needed to maintain your cat’s health. So sit back with a steaming cuppa and let us take you on an informative journey into the world of deworming.

What is Deworming?

One aspect of pet care that is often overlooked but essential for your cat’s well-being is deworming. This practice involves administering medication to combat intestinal parasites or worms that can pose a serious threat to your cat’s health.

There are various types of deworming medications available, such as tablets, liquids, and injections. Your veterinarian will recommend the best option based on the type of worm infestation and its severity. It’s crucial to follow their instructions on dosage and administration to ensure the medication’s effectiveness.

Deworming should be a regular part of your cat’s preventative healthcare routine. Kittens should be dewormed every two weeks until they reach three months old, then once a month until they are six months old. After that, adult cats should be dewormed every three to six months, depending on their lifestyle and risk factors. Outdoor cats or those who hunt may require more frequent deworming.

It’s important to note that even after deworming, your cat may still pass out live worms in their stool. This doesn’t necessarily mean that the treatment has failed. Deworming medication works by killing adult worms in the intestines, but it may not eliminate immature stages such as eggs or larvae. These immature worms can continue to grow inside your cat’s body after deworming.

Reinfection is also possible if your cat is exposed to contaminated soil or infected animals. Regular deworming treatments and good hygiene practices can help prevent reinfection.

How Does Deworming Work?

Let me share with you my expert knowledge on the ins and outs of deworming.

Deworming medications come in various forms, including tablets, injections, and topical solutions. These medications specifically target different types of intestinal parasites such as roundworms, tapeworms, hookworms, and whipworms. Your veterinarian will determine the dosage and form of medication based on your cat’s weight and age.

Once the deworming medication is administered, it quickly enters your cat’s digestive system and begins to work its magic. The medication targets the worms’ nervous system, causing them to become paralyzed and detach from the intestinal walls. After this detachment, the worms are either eliminated through your cat’s feces or absorbed into their body and broken down into harmless byproducts.

However, it’s important to note that not all deworming medications work in the same way. Some medications only target specific types of parasites, while others have a broader spectrum. Additionally, some medications may take longer to work than others, and your veterinarian may recommend a follow-up treatment to ensure that all parasites have been eliminated.

While it’s rare for cats to pass live worms after being dewormed, it’s crucial to monitor their feces for any signs of recurring parasites. If you do notice any worms in your cat’s feces after deworming, they are likely dead or dying worms that were not entirely eliminated during treatment. Keeping a close eye on your cat’s feces can help prevent reinfection down the line.

Can Cats Pass Out Live Worms After Being Dewormed?

The answer is not as straightforward as you may think.

When you administer a deworming medication to your cat, the goal is to eradicate all worms in their intestines. These worms should then exit the body through feces. Nevertheless, you might notice live worms in your cat’s feces after deworming, which can be alarming.

It is possible for cats to pass out live worms after being dewormed, but it’s not common. In most cases, what appears to be live worms are actually dead worms that have disintegrated into smaller pieces. This occurs because the medication used to eliminate the worms can cause them to die and break apart into fragments resembling live worms.

Another reason why live worms may persist after deworming is that the medication might not have been potent enough to kill all the worms. Some worm species may resist certain types of medication, allowing some worms to survive and continue multiplying in the cat’s intestines.

It’s essential to note that if your cat continues to expel live worms after being dewormed, it could indicate reinfestation or an underlying health issue. In such cases, it’s crucial to seek veterinary attention to obtain a proper diagnosis and treatment.

Can a Cat Become Re-Infected with Worms After Being Treated?

One essential aspect of their overall health is keeping them free from pesky worms. But what if you’ve treated your cat for worms and they still have them? Can a cat become re-infected with worms after being treated? Unfortunately, the answer is yes.

There are several reasons why your cat could still have worms even after treatment. The first reason is that the treatment may not have been effective in completely eliminating all of the worms. The second reason is that your cat may have been re-exposed to the same type of worm again. It only takes one infected animal or contaminated feces to cause re-infection.

To prevent re-infection, it is crucial to maintain excellent hygiene practices for both your cat and their environment. Regularly cleaning the litter box, washing bedding and toys, and keeping your cat away from areas where it may come into contact with infected animals or feces are essential steps.

In addition to good hygiene practices, administering follow-up treatments or periodic deworming can also help prevent re-infestation. Regular check-ups with a veterinarian can also help detect any signs of re-infection early on and provide prompt treatment.

Signs of Persistent or Severe Worm Infestation in Cats

Persistent or severe worm infestation can pose a serious threat to their well-being if left untreated. That’s why it’s crucial to be aware of the signs of worm infestation in cats.

While live worms in your cat’s feces are an obvious sign of worm infestation, it’s not always the case, especially if your cat has been recently dewormed. So, keep an eye out for other signs such as vomiting, diarrhea, weight loss, and lack of appetite. In severe cases, your cat might have a pot-bellied abdomen, indicating an excessive buildup of worms in their intestines, causing blockages and improper digestion.

Keep a lookout for any changes in your cat’s behavior that may suggest they aren’t feeling well—lethargy, weakness, or pain could be due to anemia caused by worms feeding on their blood supply.

If you notice any of these signs in your cat, don’t hesitate to take them to a veterinarian as soon as possible. Your vet can perform tests to determine the type of worms and provide appropriate treatment. Regular checkups and routine deworming can also help prevent severe worm infestations.

Tips to Prevent Reinfection in Cats

Your cat’s health and happiness are important to you, and we understand that. After a successful deworming treatment, taking proactive steps to prevent reinfection in your furry friend is crucial. Here are five tips to help keep your cat worm-free and healthy.

Practice good hygiene

Regular cleaning of litter boxes, bedding, and food bowls is essential for keeping your cat’s environment clean and free of potential parasites. It is also important to wash your hands thoroughly before and after handling your cat.

Keep your cat indoors

Outdoor cats have a higher risk of contracting worms than indoor cats. Limiting their exposure to other animals and environments where they may come into contact with worms can reduce the risk of reinfection.

Maintain a healthy diet

Feeding your cat a balanced and nutritious diet can help strengthen their immune system, making them less susceptible to infections. A healthy diet can also help prevent the recurrence of worms.

Regular veterinary check-ups

Regular check-ups can detect any signs of infection early on, making treatment more effective. Your veterinarian can advise you on the appropriate frequency of deworming based on your cat’s age, lifestyle, and health status.

Treat all pets in the household simultaneously

If you have multiple pets in the household, it’s crucial to treat them all for worms at the same time to prevent cross-contamination and reinfection.


To sum up, deworming is a crucial part of maintaining your cat’s health and well-being. Giving your feline friend medication to combat worms or intestinal parasites can prevent severe worm infestations that could harm their health. Although it’s uncommon for cats to pass live worms after being dewormed, it’s essential to keep an eye on their feces for any signs of recurring parasites.

Deworming medications come in various forms such as tablets, injections, and topical solutions. Your vet will determine the dosage and form based on your cat’s age and weight. However, even after deworming, there is still a chance of re-infection if your cat comes into contact with contaminated soil or infected animals.

To prevent re-infection, you should maintain good hygiene practices both for your cat and their environment. Regular check-ups with a veterinarian are also essential as they can detect any signs of re-infection early on and provide prompt treatment.

If you notice any persistent or severe worm infestation symptoms such as vomiting, diarrhea, weight loss, lack of appetite, lethargy, weakness or pain in your cat, take them to a veterinarian immediately.

By following good hygiene practices, keeping your cat indoors (if possible), feeding them healthy food and treating all pets simultaneously in the household can help prevent reinfection in cats.