In physical appearance wolves look like large dogs. However, there are some differences. Wolves have long legs and a narrow chest, enabling them to move fluently and efficiently. That, plus of their oversized paws, means that wolves can face varying conditions, such as snow, and be able to carry on effectively. Their large paws act like snowshoes, enabling them to stay on the top layers of the snow and ice.
Wolves have two different types of fur.
This acts almost like a windshell. It keeps the elements out, like rain and snow. It is thought to also offer the wolves limited protection from bangs and bruises when playing rough, or running through brush. The other type of fur is soft and fleecy. It is basically for insulation, like a polar tech layer.