The black widow spider is a small, glossy black spider known for its distinctive red hourglass marking on the underside of its abdomen. These spiders are typically found in dark, sheltered areas such as woodpiles, sheds, and basements. They are most active at night and are known for their web-building skills, creating irregular, tangled webs to catch prey. While the bite of a black widow spider can be dangerous, it is rarely fatal to healthy adults. Symptoms may include pain, muscle cramps, and nausea. Prompt medical attention is recommended if bitten, especially for children, the elderly, or those with weakened immune systems.