What is a body feature of a wolf and how does it help a wolf survive?

Fur - A double layer thick coat of fur to keep the wolf warm in cold enviornments. Can shed.

Eyes: Reflect light and make it easier to see in the dark.

Ears: Can hear up to a mile away, allowing to hear predators.

Nose: Can smell up to a mile away (THough it becomes very faint).

Teeth: Tears through the flesh of prey

Tail: Distinguishes the dominance order among a pack of wolves.