The term 'Animal in the Weasel Family' can be summarized as an Otter, which is a five letter word. Otters are semi-aquatic mammals that belong to the Mustelidae family, which also includes weasels, badgers, and ferrets. They are found in many parts of the world, including North America, Europe, Asia, and Africa. Otters have long, slim bodies and webbed feet, which help them swim quickly and efficiently. They are carnivorous and feed on fish, crustaceans, and other aquatic animals.