The term 'otter relative' refers to three different animals: the ERMINE, FERRET, and MINK. The ERMINE is a small mammal with a white winter coat and black-tipped tail, native to northern Europe and Asia. The FERRET is a domesticated mammal related to the weasel, often kept as a pet. The MINK is a semi-aquatic mammal found in North America and Europe, known for its luxurious fur. All three of these animals are related to the otter, and share many of its characteristics.