Black Widow
The black widow is one of the most common spiders that were listed as “dangerous.” It has a black body as well as a red hourglass mark on its abdomen. There were reports that black widow bites led to instant death, but others who have experienced its venom only suffered swelling and pain. More severe symptoms include fever, cramps, nausea, vomiting and chills. The black widow is common in the United States, Canada and Mexico.
