The term 'Ferret Kin' is a crossword solution that can be filled in with the word 'Otter'. Otters are semi-aquatic mammals that belong to the Mustelidae family, which also includes ferrets, badgers, and weasels. They are found in many parts of the world, including North America, Europe, Asia, and Africa. Otters have long, slim bodies and webbed feet, and they are known for their playful behavior.