Fortunately, fatalities are fairly rare; the spiders are nonaggressive and bite only in self-defense, such as when someone accidentally sits on them. The animals most at risk from the black widow' ...

Alaska is the only state that doesn't have a type of black widow spider. Although black widow spider bites can be dangerous, ...

Some spider ... physician at Ohio State University Wexner Medical Center. In the U.S., there are two types of spiders that can cause severe reactions: the brown recluse and black widow.