The San Nicolás Island fox is a small mammal native to San Nicolás Island, part of the Channel Islands in California. This fox is known for its distinctive grayish-brown fur, large ears, and a bushy tail. It typically weighs between 4 to 6 pounds and measures about 24 to 30 inches in length, including the tail. This species is adapted to its island habitat, primarily feeding on small mammals, birds, and fruits. The San Nicolás Island fox is one of the smallest fox species in North America and plays a crucial role in the island's ecosystem by helping to control prey populations.