Your cat can pick up a case of worms by sharing a litter box with the other infected cat. A cat can also be infected by grooming your dog or sharing the dog's food and water bowls.
How would an indoor cat get worms?
The most common way for an indoor cat to become infected with tapeworms is by eating a flea that's infected. Even if your pet has never set foot on the ground outside, you can bring fleas into your home on your clothes, then they get on your cat.
Can cats and dogs share worms?
Yes, dogs can get worms from felines. People may think specific strains of worms cannot be transmitted between species, but a number of worms can, in fact, be transmitted from cats to your dog.
Can dog roundworms infect cats?
Another less common roundworm, Toxascaris leonina, can infect both dogs and cats. Roundworms are also known as ascarids and the disease they cause is called ascariasis.
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