Cats love to put their butts in your face. It’s a feline way of saying “Hello.” What’s truly disturbing is when there is a host of little worms all wiggling out of kitty’s bottom, saying “Hello,” too. For such fastidious animals, cats can carry a whole lot of worms and parasites.
We’ve all heard the “crazy cat lady” stereotype, but parasites might be the problem, not cats. A new study from Denmark suggests that women with a Toxoplasma gondii infection have an increased risk of self-directed violence. The study explores how the bug has been linked to behavioral, affective and cognitive disorders in people. The study screened newly born children for T. gondii infection while associating the mother’s self-directed violence as a neurological imbalance caused by the bug.
Studies find that the parasite known as T. gondii should not be underestimated. It lies dormant in a feline’s intestinal tract and rarely does a cat show physical symptoms. But this widespread neurotropic protozoan parasite affects approximately one-third of the human population worldwide with symptoms ranging from little to none in most common cases to severe behavioral disorders in rare cases, according to scientists. People can be infected by ingestion of the eggs spread from feces of an infected cat, eating uncooked meat or contaminated water.
Maybe this is how the “crazy cat lady” came to be. The parasite’s effects on the brain — not a kitty obsession — are responsible for erratic behavior.
Self-directed violence in mothers and crazy cat ladies is only a small part of what to be concerned about when it comes to T. gondii.
According to Eugene veterinarian Sheila Johnson, “T. gondii is very serious and can cause birth defects in children, so pregnant women should be careful when cleaning the litter box.”
Although with all this talk of T. gondii in cats and the threat it poses, changing the litter box may sound alarming, but “You are more likely to contract it from ingesting infected, undercooked meat,” Johnson says.
So before the thought of giving your beloved cat away sinks in, remember that there are other health concerns much more likely to enter your home.
The most common parasitic worms found in most animals, including your cat, are roundworm and tapeworm. Outdoor cats are more likely to expose themselves to worms through the environment. Fecal droppings, ingesting infected prey and dirt are among the many ways roundworms get picked up. The tapeworm, on the other hand, is most commonly given to your cat by fleas.
“We see a lot of roundworms, primarily in kittens, and those worms can be about a half a foot,” Johnson says. “That’s why it’s very important to deworm your animals regularly.”
The dewormer used on most animals is a neurotoxin that paralyzes the worm, which exits the cat from the anus and dies, according to Johnson.
“We’ll get frantic phone calls from people finding worms on their carpets and we have to assure them that the worm coming out is what we want,” Johnson says.
Cats have a reputation for being assiduous groomers, but they, too, can miss a spot. All it can take is that one fleabite or ingesting the wrong critter before your cat’s insides are crawling with hungry worms. If you see symptoms, it’s better to be safe in the vet’s office then sorry with worms crawling out of your cat’s butt.
A Note From the Publisher

Dear Readers,
The last two years have been some of the hardest in Eugene Weekly’s 43 years. There were moments when keeping the paper alive felt uncertain. And yet, here we are — still publishing, still investigating, still showing up every week.
That’s because of you!
Not just because of financial support (though that matters enormously), but because of the emails, notes, conversations, encouragement and ideas you shared along the way. You reminded us why this paper exists and who it’s for.
Listening to readers has always been at the heart of Eugene Weekly. This year, that meant launching our popular weekly Activist Alert column, after many of you told us there was no single, reliable place to find information about rallies, meetings and ways to get involved. You asked. We responded.
We’ve also continued to deepen the coverage that sets Eugene Weekly apart, including our in-depth reporting on local real estate development through Bricks & Mortar — digging into what’s being built, who’s behind it and how those decisions shape our community.
And, of course, we’ve continued to bring you the stories and features many of you depend on: investigations and local government reporting, arts and culture coverage, sudoku and crossword puzzles, Savage Love, and our extensive community events calendar. We feature award-winning stories by University of Oregon student reporters getting real world journalism experience. All free. In print and online.
None of this happens by accident. It happens because readers step up and say: this matters.
As we head into a new year, please consider supporting Eugene Weekly if you’re able. Every dollar helps keep us digging, questioning, celebrating — and yes, occasionally annoying exactly the right people. We consider that a public service.
Thank you for standing with us!

Publisher
Eugene Weekly
P.S. If you’d like to talk about supporting EW, I’d love to hear from you!
jody@eugeneweekly.com
(541) 484-0519
