Your cat has worms, here's what you need to know!

Worms in your cat? Time to intervene.
Unfortunately, cats and worms are not an uncommon combination. In fact, almost every cat will have to deal with them sooner or later. It’s one of the most annoying things about cats. Worms are invisible, unsanitary, and potentially harmful to both your cat and your family.
Worm infections are often noticed late. The symptoms are subtle, and cats do not readily show that they are not feeling well. Meanwhile, they can infect other pets, or even humans. Reason enough to address this seriously.
In this blog, you'll learn everything about cat worms: how they develop, how to recognize them, which types are most common, and most importantly—how to get rid of them for good and prevent reinfection.
How does a cat get worms?
There are several ways a cat can become infected with worms, and often as an owner you don't even realize it. Cats can contract worms through:
- eating fleas (e.g., while licking),
- contact with contaminated soil, prey animals or feces,
- or - in kittens - even through breast milk.
It’s also important to mention some lesser-known sources. For example, cats can re-infect themselves through their own feces if the litter box isn’t cleaned regularly. This is a particular risk with roundworms. In that regard, a self-cleaning litter box like the Poopy Nano 2 is not just a matter of convenience, but also a hygienic precaution.

Symptoms of worms in cats
A cat with worms usually won’t become dramatically ill right away. But make no mistake: the symptoms of worms in cats can start subtly and cause significant damage over the long term. These include:
- Weight loss, even with a normal appetite
- Dull coat or bald spots
- Vomiting or diarrhea
- White worms around the anus or in the litter box (small white worms in cats)
- Drowsiness or just restless behavior
- In severe cases: blood in the stool (blood in a cat's stool due to worms)
In kittens or weakened cats, worms can even be life-threatening. This is why it is important for you as an owner to be alert to subtle changes in behavior, appetite and feces.
Types of worms in cats
There are several types of worms that can infect cats. Each type has a different way of spreading and specific risks. As an owner, it is important to know the difference so you know what your cat needs in terms of treatment and prevention.
Roundworms are by far the most common type of worm, especially in kittens. These worms live in the intestines and, in severe cases, can cause vomiting, a distended belly, or a dull coat. Roundworms can also be transmitted to humans, which makes it especially important to take hygiene seriously.
Tapeworms can often be recognized by small, white segments that look like grains of rice—you may sometimes see these around the anus or in the litter box (small white worms in cats). Infection usually occurs through fleas. That’s why it’s crucial to always use an effective flea treatment.
Hookworms are less common in the Netherlands, but they can cause severe anemia in young or weakened cats. They attach themselves to the intestinal wall and sometimes cause blood loss.
Some pet owners also report seeing black worms in their cats, although these are often cases of misidentification—such as dark feces or larvae from other parasites. If in doubt, always have your veterinarian perform a fecal exam.

How do you get rid of worms?
When you discover that your cat has worms, you want to get rid of them as soon as possible. Fortunately, an infestation is usually treatable - provided you intervene in time and take the right approach.
The first step is always: deworming. There are many products available at your veterinarian’s office or a pet store. Always choose a product that’s appropriate for the type of worm and your cat’s weight. Please note: not every product is effective against every type of worm.
However, deworming is not a one-time action. Worm eggs may remain in the environment - or your cat may become reinfected through its own box or fur. Therefore, repeat the treatment as advised on the package insert, usually after two to three weeks. This is how you break the cycle.
If your cat is severely infected, becomes sicker or develops worms repeatedly, always see your veterinarian right away. In some cases, additional testing is needed, such as a fecal examination to determine exactly what type of worm is involved.
Preventing worms, what can you do?
Prevention is always better than cure. And with worms this is extra important, because the infection often goes unnoticed. With a few smart habits, you can greatly reduce the chances of a new infection.
Make sure your cat is dewormed preventively every three months—even if you don’t notice any symptoms. This is especially important if your cat goes outside or eats raw meat. Also, avoid fleas, as they can transmit tapeworms. So always use a good flea treatment in combination with a deworming schedule.
Hygiene is a second pillar. Clean the litter box daily and wash hands after contact with feces. For those with young children or multiple cats, this is especially important. A self-cleaning litter box can help make this process automatic, so your cat doesn't keep coming into contact with eggs.
ensure healthy resistance. Good cat food (cat food) and adequate hydration will help your cat stay strong. A drinking fountain can encourage your cat to drink more, something that is also important during recovery from a worm infection. But of course, you always know what fits best and is good for your cat.
Roadmap to removing worms in cat
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Learn the symptoms. Watch for weight loss, vomiting, a dull coat, and worms in the stool.
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Treat the problem specifically. Use an appropriate deworming medication, tailored to the animal's weight and the type of worm.
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Repeat the treatment. A second course of treatment is often necessary to eliminate all stages of the worm.
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Clean the area.Wash blankets and baskets, and keep the litter box clean and hygienic.
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Prevent new infections. Deworm regularly and prevent fleas and contact with raw meat or feces.
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