Imagine a parasite that makes an animal change its habits, guard the parasite’s offspring or even commit suicide. While mind-control may sound like something out of a science fiction movie, the phenomenon is very real—and has spawned a new field, neuro-parasitology. As outlined in an article published today in Frontiers in Psychology, understanding how parasites “hack” their host’s nervous system to achieve a particular goal could provide new insights into how animals control their own behavior and make decisions.