why do cats have worms

Ellie

I’ve noticed my cat has been scratching more than usual and seems less energetic lately. After a vet visit, I found out she has worms. I’m confused—how did this happen? I keep her indoors most of the time, and her litter box is clean. Are there other ways cats can get worms that I’m not aware of?

Riley

Even indoor cats can pick up worms from unexpected sources, like grooming themselves after walking on contaminated surfaces or eating insects like fleas or flies. My cat got tapeworms once after catching a housefly—apparently, they can carry larvae! Regular deworming and flea prevention are key.

Theodore

It could also be from something as simple as stepping in contaminated soil or dirt tracked in on shoes. My friend’s cat got roundworms after she potted new plants indoors—the soil had eggs in it. Maybe check where your cat spends time or what she’s exposed to, even inside.