The toad-headed agama may be small, but it has one of the most dramatic defense displays in the reptile world. When threatened, it inflates its cheeks, opens its bright red mouth, and flares its jaws ...

In China, a particular species of edible mushroom causes hundreds of cases of hallucinations annually, as well as some delirium, dizziness, and mania. The hallucinations tend to be of tiny “elves” ...