Pet Health

Roundworms in Cats

Learn about roundworms in cats—common parasites that can affect your furry friend’s health. Discover symptoms, treatment options, and prevention tips!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
Healthy cat with a focus on its belly showing signs of roundworm infection, highlighting symptoms and prevention tips.

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Have you noticed your cat looking unwell, or are you worried they might have picked up parasites? Roundworms are one of the most common intestinal parasites in cats, and they can affect cats of all ages, whether they live indoors or outdoors. While the thought of worms can be unsettling, understanding the signs, causes, and treatment options can help you protect your feline friend and keep them healthy.

⚠️ What to Watch For

Roundworms are parasitic worms that live in your cat’s intestines. They can cause a range of symptoms, although some cats may not show any signs at all. Knowing what to look for is the first step to identifying and treating an infection.

  • A bloated or potbellied appearance, especially in kittens
  • Vomiting, sometimes with visible worms
  • Diarrhea or soft stools
  • Weight loss despite a normal or increased appetite
  • Dull or rough coat
  • Coughing (if the worms migrate to the lungs)

If your cat displays any of these symptoms, it’s worth consulting a vet to determine if roundworms or another health issue may be to blame.

🔍 Possible Causes

Cats can become infected with roundworms in several ways, and understanding these pathways can help you take preventative measures.

  • Ingesting infected eggs: Roundworm eggs are shed in the feces of infected animals. Cats can accidentally ingest these eggs while grooming themselves or walking through contaminated areas.
  • Hunting prey: Rodents, birds, and other small animals can act as carriers (intermediate hosts) for roundworm larvae. When a cat eats an infected prey animal, they can become infected.
  • Mother-to-kitten transmission: Kittens often acquire roundworms from their mother, either through her milk or while still in the womb.

These transmission routes mean that even indoor cats can be at risk, especially if they were adopted as strays or have access to contaminated environments.

✅ What You Can Do at Home

If you suspect your cat has roundworms, there are steps you can take at home to manage the situation while waiting to consult a vet.

  • Clean your cat’s litter box daily to remove any potentially infectious feces.
  • Wash your hands thoroughly after handling your cat or their litter box to prevent accidental ingestion of eggs.
  • Ensure your cat’s living area is clean and free from feces or other contaminants.
  • Prevent your cat from hunting or eating wild prey by keeping them indoors or supervising outdoor time.

While these measures can help reduce the spread of infection, treating roundworms effectively requires veterinary intervention.

💡 When to Call a Vet

Roundworm infections are treatable, but they require specific medications to fully eliminate the parasites. If you notice symptoms of roundworms in your cat, or if you’ve seen worms in their vomit or feces, it’s time to reach out to a vet.

Common deworming medications include pyrantel pamoate, fenbendazole, and milbemycin oxime. These medications are safe and effective when administered under veterinary guidance. Your vet may recommend a fecal examination to confirm the presence of roundworms and determine the appropriate treatment plan.

In severe cases, especially in kittens, roundworm infections can lead to serious complications such as intestinal blockages. Prompt veterinary care is crucial to address these issues and ensure your cat recovers quickly.

FAQs

Q: Are roundworms contagious to humans?
A: Yes, roundworms can be transmitted to humans, particularly children, through contact with contaminated soil or feces. Practicing good hygiene, such as washing hands after handling your cat or their litter box, can reduce the risk.

Q: Can I use over-the-counter dewormers for my cat?
A: It’s best to avoid using over-the-counter dewormers without consulting a vet. These products may not be effective against all types of roundworms and could cause side effects if used improperly.

Q: How often should I deworm my cat?
A: Kittens typically require deworming every 2–3 weeks until they are 12 weeks old, followed by monthly treatments until six months of age. Adult cats may need deworming every 3–6 months, depending on their lifestyle and risk factors. Your vet can recommend a schedule tailored to your cat’s needs.

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References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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