Toxoplasma gondii is a single-cell parasite in cats. Studies have shown that mice infected with Toxoplasma go paralyzed in areas of the brain that control fear, and are not afraid when exposed to cats. Can it be launched from this? ['Toxoplasma can damage the brain of mice.', 'toxoplasma makes mice bold.', 'cats use toxoplasma to trap mice.', 'Symbiosis between cats and Toxoplasma.']