When people talk about fungi itís usually in the context of a tasty dish, or that fuzzy brown thing on your peach, but rarely ever are fungi referred to as deft, vicious killers. What you say? Killers? Well, fungal pathogens have long preyed on insects, claiming millions of victims yearly and all over the world. An array of pathogenic fungal genera can infect a broad range of insects [and spiders! --Ed.]. Once an insect has been exposed to spores, the developing fungus may induce behavioral responses in its host. These behavioral responses may result in improved spore dispersal and fungal fitness. But behavioral responses may also be defensive, ultimately benefiting the host. One of these responses is behavioral fever, in which insects raise their body temperature as a means of literally toasting a fungal invader.