The book of dragons

Woolly howl

The fine dark scales on the back of this blizzard-loving Strike Class dragon are often mistaken for fur at a distance, but this dragon is far from cuddly.
The Woolly Howl's pale belly lets it blend in with the cold white clouds in the sky. It uses this cover to launch a literal hailstorm of ice balls. The Woolly Howl's appearance is similar to that of a Night Fury, but it has smaller eyes, and its wing structure resembles that of a Skrill's. Its body is covered in fine dark scales, which at a distance, look like fur. It has a dark brown coloration on its back and a pale brown coloration on its underside, wings and tail fins. It has a unique vibrant purple eye color, as well as a purple tongue. There are no spines or spikes along its whole body, but it has a small hump at the withers on the original Dragons: Rise of Berk version that creates a sloped back. The dark brown coloration and the shape of its scales resemble that of a golden eagle's feathers or a brown bear's fur and is named due to its strong resemblance to a woolly mammoth. In School of Dragons, it is stated that these scales take longer to be painted than normal dragon scales. From the School of Dragons size, it is slightly larger than the Night Fury, the Skrill, and the Snow Wraith. These dragons like snowy climates but can go to other warmer climates if need to.