The North American River Otter is a playful and agile mammal found in various aquatic habitats across North America, including rivers, lakes, and coastal areas. They have a streamlined body, webbed feet, and thick fur that helps keep them warm in cold water. These otters are social animals, often seen in groups, and are known for their energetic behavior. River otters primarily feed on fish, crustaceans, and small mammals. They are excellent swimmers, using their powerful tails to propel themselves through the water. Their populations are generally stable, but they can be affected by habitat loss and pollution in their environments.