Otters are cute, playful and fascinating creatures that live in rivers, oceans and lakes. These adorable animals can be called by a variety of different names, including waterdogs, river wolves, fish otters, and sea otters. The name for these creatures is often dependent on their habitat and the body of water they are found in. The word "Lutra" is often used to describe the European otter, while "Lontra" is used to describe the North and South American otters. Whether we call them by different names or stick to the traditional "otters," these playful creatures are beloved around the world for their adorable antics and playful nature.