A parasitic infection transmitted to humans by cats affects billions of people and can alter their behavior. New research ...

Cats in particular can carry a parasite known as Toxoplasma gondii. This is one of the most common parasites in the world and more than 40 million Americans are estimated to carry it. One way ...

Your cat may have worms if they are vomiting, losing weight, or you see worms in their stool. Cats may get roundworms, tapeworms, hookworms, or heartworms. You can treat a worm infestation with ...

The cat parasite Toxoplasma gondii lures infected rats to their feline predators by making the rodents sexually aroused by cat urine, according to a new study in PLoS One. For over a decade, ...

It might still affect human behavior in important ways. The infection is caused by a brain parasite transmitted by cats. The parasite lives in a sort of symbiosis with our furry friends.