The black rat, also known as the ship rat, is a small rodent that typically has a slender body and a long tail. Its fur is usually dark gray or black, which helps it blend into its surroundings. These rats are known for their agility and ability to climb, often making their homes in trees, attics, or other high places. They are primarily nocturnal, meaning they are most active at night. Historically, the black rat played a significant role in the spread of the bubonic plague during the Middle Ages. They are also known to carry various diseases, making them a concern for public health. Despite their negative reputation, black rats are fascinating creatures that have adapted well to human environments.