Introduction: Why Roundworm in Cats Matters
Roundworm in cats is one of the most common parasitic infections veterinarians see. These intestinal worms are not just harmful to cats—they can also spread to humans, making them a public health concern.
The good news? Roundworm is treatable and preventable with the right veterinary care. Let’s break down the 5 essential things you need to know about roundworm in cats.
1. What Is Roundworm in Cats?
Roundworm is the common name for intestinal parasitic worms found in many mammals, including cats. Species such as Toxocara cati and Toxascaris leonina infect cats through:
Ingesting parasite eggs from the environment
Transmission from mother to kittens (before birth or through nursing)
Eating prey animals already carrying roundworm
2. Symptoms of Roundworm in Cats
Many adult cats with roundworm show no visible signs, which is why routine vet checks are critical. However, in kittens, sick cats, or cases with heavy infestations, symptoms may include:
Pot-bellied appearance
Poor coat condition
Weight loss despite eating normally
Constipation or impaction
Coughing (if worms migrate to the lungs)
Severe cases can cause life-threatening complications if left untreated.
3. How Vets Diagnose Roundworm
Diagnosis usually involves a fecal exam, where your vet checks a fresh stool sample under a microscope for parasite eggs. Occasionally, worms may be visible in your cat’s stool or vomit.
4. Treatment Options for Roundworm in Cats
The good news: roundworm is easy to treat.
Your veterinarian will prescribe safe and effective dewormers.
Treatment may require one or two doses, depending on the medication.
Follow-up fecal exams may be recommended to ensure complete clearance.
Never use over-the-counter dog dewormers on cats, as many contain toxic ingredients for felines.
5. Preventing Roundworm in Cats
Prevention is the best medicine. Protect your cat by:
Keeping them on monthly parasite preventatives (e.g., products that also protect against fleas, ticks, and heartworm)
Deworming indoor cats every 6 months since roundworm can spread through contaminated surfaces or pests
Having your vet check a fecal sample twice a year
Since roundworm can infect humans—especially children—prevention also protects your family.
👉 For more detailed veterinary guidance, visit the Cornell Feline Health Center on roundworms.
Conclusion: Roundworm Is Common but Preventable
While roundworm in cats is a serious condition, it’s both treatable and preventable. With routine deworming, regular vet checkups, and parasite control, you can protect your cat’s health—and your family’s.
Being proactive ensures your feline friend stays happy, healthy, and parasite-free.
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