I'm pretty sure that human's body may be filled with bunch of similar parasites too.<p>Another example: <a href="http://www.independent.co.uk/news/science/toxoplasma-gondii-parasite-that-breeds-in-cats-could-affect-human-behaviour-when-it-infects-people-a6861221.html" rel="nofollow">http://www.independent.co.uk/news/science/toxoplasma-gondii-...</a>
<a href="https://www.theatlantic.com/magazine/archive/2012/03/how-your-cat-is-making-you-crazy/308873/" rel="nofollow">https://www.theatlantic.com/magazine/archive/2012/03/how-you...</a>