Original sentence: The colour of the fur is variable, but is usually dark brown to black on the upperparts, dark greyish on the sides, and iron grey underneath, although some individuals may be whitish on the back and have white underparts.The giant bushy-tailed cloud rat has a strange, shrill cry that has been described as similar to that of some insects.The giant bushy-tailed cloud rat is one of the most spectacular rodents in Asia, with an elongated body; long, bushy tail; and a coat of soft, thick underfur, with long wavy or straight overfur on the upperparts, which gives this rat a fluffy appearance.The giant bushy-tailed cloud rat occurs only in the high mountains of central northern Luzon, the largest island in the Philippines.The hands and feet each have five digits, with the thumb bearing a flattened nail while the other digits have powerful, slender claws.The tail, which is longer than the length of the head and body, has scant woolly underfur, but is covered with long hairs, and the eyes and ears of this cloud rat are small