Native habitat: United States and Latin America
Death toll: Over 18 million people have become infected, resulting in 14,000 deaths every year
Why you should be terrified of them: There is nothing romantic about kissing bugs. They are blood suckers that are attracted to light, odor, and warm body temperatures. 

The most common kissing bug is located in Arizona. They are usually located in packrat nests. Severe allergic reactions are common leading to skin irritation and redness. The more common symptoms are anaphalitic shock, which requires immediate medical attention and can lead to Chaga's disease. Chaga's disease is a result of the feces of the kissing bug entering into the human blood stream. Sounds delightful.