Seen here is an arctic wolf cub howling for one of its first times since being born. The cub is less than a month old, still covered in its distinct brown fur which will eventually turn white when it becomes an adult. The cub is one of five that were born recently (April 27th, 2013) at Schönbrunn Zoo.

The arctic wolf (Canis lupus arctos), also called snow wolf or white wolf, is a subspecies of the gray wolf, a mammal of the family Canidae. They inhabit the Canadian Arctic, Alaska and the northern parts of Greenland. [Source]