- Blog
- 19 Jul 2026
WORMS IN CATS
Intestinal worms are common, highly treatable parasites in cats that can cause severe health issues if left untreated. While many infected cats show no external symptoms initially, a heavy parasite burden can lead to visible illness, structural discomfort, and nutritional deficiencies.
Most Common Types of Worms
Roundworms: Most common type; look like spaghetti strands up to several inches long; frequently passed to kittens via mother’s milk.
Tapeworms: Flat, segmented parasites; leave shed segments that look like moving white rice grains around the cat's anus or bedding; typically contracted by swallowing infected fleas.
Hookworms: Small, hook-shaped blood-suckers that anchor to the intestinal wall; cause severe anemia, especially in younger kittens.
Heartworms: Transmitted via mosquitoes; affect the heart and lungs rather than the gut; potentially fatal and lack an official safe treatment for felines.
Key Symptoms to Watch For
- Visible signs: Worms or rice-like segments in feces, vomit, or clinging to the fur around the anus.
- Physical changes: A distended, pot-bellied abdomen paired with a dull, coarse, or clumped fur coat.
- Digestive issues: Chronic diarrhea, dark tarry stools (indicating blood), or frequent vomiting.
- Weight fluctuations: Rapid weight loss despite an increased, ravenous appetite.
- Behavioral indicators: Lethargy, weakness, or "scooting" the bottom across floors due to intense irritation.
Veterinary Diagnosis and Safe Treatment
- Fecal flotation test: Schedule an exam with a veterinarian to identify the exact worm species, as different parasites require entirely different medications.
- Prescription dewormers: Administer oral or topical medical treatments (such as those reviewed by PetMD) directly prescribed by your vet.
- Avoid home remedies: Never use online "natural remedies" like garlic or apple cider vinegar; garlic is strictly toxic to felines, and these do not clear internal infestations.
- Treat the household: Treat all resident pets simultaneously to prevent a continuous cycle of reinfection across your household.
Prevention and Human Risks
Some feline parasites are zoonotic, meaning hookworms and roundworms can migrate to humans—particularly young children—through contaminated soil or litter. Protect your home by practicing strict handwashing, cleaning litter boxes daily, using monthly flea prevention, and keeping cats indoors to stop them from hunting infected rodents.
To help narrow down the best immediate steps, please let me know:
- Is your cat a kitten or an adult?
- Have you noticed specific symptoms (like rice-like segments, vomiting, or a bloated belly)?
- Is the cat primarily kept indoors or outdoors?