“Parasites, Mew Give Me Road Rage”

Taken from New Scientist, April 2, 2016.
Cats can make us angry. Scratching our furniture, waking us up – and giving us parasites that may cause explosive rage.

Toxoplasma gondii is a parasite carried by cats that lives in the brains of as many as a third of all people worldwide. Now the parasite has been linked to a psychiatric condition involving disproportionate outbursts of aggression, like road rage. Emil Coccaro at the University of Chicago thinks the parasite may be altering neurotransmitters in the brain.