Foxgloves contain digoxin, a medication for heart conditions that can be toxic, but their ingestion alone doesn't directly cause heart attacks. Check out this article for more details.
Spiders may be smaller than humans but they can be extremely dangerous that can end a person's life. Check out which spider species are the deadliest and why.
Research recently revealed how toxins from sea snails can potentially treat certain conditions like cancer, among others. Learn more about the possibility here.
It may perhaps be common knowledge that Daddy longlegs are the world's most poisonous spider species although their fangs are extremely short to bite a person.
The development of the University of Mississippi and Hapten Science on poison ivy vaccines have passed initial human testing and now under clinical trials.