Toxoplasmosis (tok-so-plaz-MOE-sis) is a disease that results from infection with the Toxoplasma gondii parasite, one of the world's most common parasites.

The researchers stressed, however, that they merely have identified an association between Toxoplasmosis and rage , and cannot say that Toxoplasmosis causes rage — or that people should get rid of their cats, for that matter.