It helps keep the wolf warm.
A grey wolf (also known as a timber wolf) is known for a lean chest that works like a snowplow in thick snow. Also it has thick warm fur, for sleeping outside.
the gray wolf is able to adapt to its environment as it has long fur.
Paul's wolf form is described as dark gray with silver-gray fur.
Grayish,black.
The body covering of wolves is fur.
gray wolves are an actual species of wolf, and they're colors can range from light gray to jet black.
it gives good luck
Gray wolf fur has been used by the Native American hunters as disguises so that they can get close to buffalo. It has also been used to make clothing, ruffs or coats.
It was endangered because of many people hunting the wolf for food or fur or their teeth!
Gray fur is more of an inconspicuous color, than a camouflage.
So they can survive through harsh winters in the mountains
"The Red Wolf has a reddish coat, silver-grey forehead and darker signs on white legs and a cream underbelly." - From http://en.wikipedia.org/wiki/Red_Wolf Wikipedia also has photos that you can look at.