Editor's Note: This infographic was updated to include a qualifier for the percent of men and women with arachnophobia, which includes those who fear spiders but may not be considered to have a spider phobia.
Ross Toro is a contributing infographic artist for Live Science. He specializes in explanatory graphics that deal with science topics. Ross is a former art director of the Los Angeles Times, Associated Press and United Press International. He teaches Filipino martial arts when not dabbling in cartoons and animation.