The term 'otter cousins' refers to two species of animals that are related to otters. These two species are minks (5 letters) and WEASELS (7 letters). Minks are semi-aquatic mammals that are closely related to otters, ferrets, and polecats. They are found in North America, Europe, and Asia, and they have a long, slender body with short legs and a thick fur coat. WEASELS are small carnivorous mammals that are also related to otters. They are found in North America, Europe, and Asia, and they have a long, slender body with short legs and a thick fur coat.