Rats are small, furry mammals that belong to the family Muridae. They are known for their long tails, sharp teeth, and keen sense of smell. Common species include the Norway rat and the black rat. Rats are highly adaptable and can live in various environments, from urban areas to rural fields. They are often seen as pests because they can invade homes and contaminate food. Despite their reputation, rats are intelligent creatures. They can learn tricks, solve problems, and even form social bonds with each other. In some cultures, they are kept as pets, providing companionship and entertainment for their owners.