A winter wolf was more akin to a worg than an actual wolf, being of wicked intelligence and cunning, native creatures to The Vale of Everwinter. It grew to about 8 feet (2.4 meters) in length, 4 ft 6 in (1.4 m) at the shoulder, and weighed around 450 lb (200,000 g).
They had glistening white or silvery coats of fur and eyes that were either silvery or a very pale blue, with the latter eye color being more predominant in their species. These creatures were known to often have a foul disposition. Using their fur as camouflage, winter wolves would lay in wait for prey.
When an ambush was triggered, winter wolves would encircle their prey and take turns to attack, or attempt to pin it. They could breathe gusts of cold as well as bite their victims. They were immune to cold and cold magic, but were vulnerable to fire.