The term 'Cousin of a Mink' can be solved with the 5-letter word 'Otter'. Otters are semi-aquatic mammals that belong to the Mustelidae family, which also includes mink. They are found in many parts of the world, including North America, Europe, Asia, and Africa. Otters have long, slim bodies and webbed feet, making them well-adapted for swimming. They feed mainly on fish, but also eat crustaceans, frogs, and other aquatic animals.