The liver is a vital organ in the human body, responsible for filtering blood, producing bile, and metabolizing nutrients. It plays a key role in detoxifying harmful substances and storing vitamins and minerals. The liver also helps regulate blood sugar levels and produces proteins essential for blood clotting. In addition to its functions in humans, the liver is found in many animals, including dogs, cats, and cows. Each species has a liver that performs similar functions, although the size and specific roles may vary. The liver is also a common food source, often used in dishes like pâté and liverwurst.