Cats carry a parasite known as Toxoplasma gondii, which can cause psychiatric disorders in humans, including episodes of explosive rage, reports New Scientist. When the parasite infects mice, it makes the rodents less afraid of cats, which makes them more likely to be caught and eaten.

However when the parasite infects humans either through cat feces or getting scratched by a cat after it has used a litter box, then the parasite can induce aggressive behavior in humans. So the next time you’re a victim of road rage, that person could be a cat owner.

To read more about how this cat parasite can make humans angrier than they already are, click here.

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