Symptoms of infection begin to appear in people only with immunodeficiency, weakened immunity. Scientific studies show that Toxoplasma gondii can cause mental illness in humans. For example, in 2012, scientists found that the presence of such parasites increases the likelihood of schizophrenia. However, White does not want to find out if all of these statements are true.
At the same time, many scientific works show that with toxoplasmosis (an infection caused by Toxoplasma gondii) in animals, behavior changes. They become less careful and are no longer so much afraid of the things that scared them before. A similar thing happened with hyenas and mice.