By Stephanie Pappas, Senior Writer Published: 12/10/2013 03:55 PM EST on LiveScience Though tarantulas may look scary, people familiar with the large, hairy spiders know them to be mostly harmless pets. However, some species pack a mean bite, as a new medical case report reveals. A 45-year-old man went to an emergency room in Switzerland complaining of severe muscle spasms and chest pains, according to the case report. Those symptoms can appear with a number of conditions, said Dr. …
