It's long been known as a romantic symbol of Christmas ... European mistletoe seems to be more toxic." There have not been many deaths on record of mistletoe poisoning but there have been reports ...

But venomous creatures, such as wasps, deliver their toxic cocktails by wounding another animal, often via a fang, stinger, or spine. In contrast, poisonous organisms administer secretions ...

For certain species that feed on toxic fare like plants and insects, not only do the poisonous meals do these creatures no harm, but the consumers actually co-opt the toxins. They become poisonous ...