The hoary fox, also known as the Lycalopex vetulus, is a small fox species primarily found in South America. It has distinct characteristics such as its bushy tail, grayish-brown fur, and a white underbelly. Although it is commonly known as the hoary fox, this species also has other synonymous names. It is also referred to as the crab-eating fox due to its omnivorous diet that includes crabs, insects, and small mammals. Another synonym for the hoary fox is the Pampas fox, as it is found predominantly in the Pampas region of South America. Its scientific name, Lycalopex vetulus, is also occasionally used as a synonym for the hoary fox.