Bed bug droppings can cause dark marks to appear on mattresses, sheets, headboards, or walls, which are about the size of a ...

These photos of 11 common bug bites and stings can help you identify what's responsible. Plus, symptoms and expert tips to ...

Perioral dermatitis is a rash that appears as clusters of inflamed skin and small raised bumps around the mouth and nose. The ...

Stag beetles have their sumo matches. Female fireflies who murder their mates. These are some of our favorite mating behaviors among insects and arachnids.