From the U.S. Fish and Wildlife Service's online digital media library.
Check http://images.fws.gov/ for higher quality version.

The Arctic fox (Alopex lagopus), also known as the white fox, polar fox, or snow fox, is a small fox native to the Arctic regions of the Northern Hemisphere and common throughout the Arctic tundra biome.

Metadata
Title: Arctic Fox with Least Auklet on St. Matthew Island
Alternative Title: Alopex lagopus
Creator: DeGange
Source: AMNWR/000318/DeGange
Publisher: USFWS
Contributor: ALASKA MARITIME NATIONAL WILDLIFE REFUGE
Language: EN - ENGLISH
Rights: (public domain)
Audience: (general)
Subject: AMNWR, Alaska Maritime National Wildlife Refuge, Mammals, Wildlife Viewing, Tourism, Bering Sea, Islands, Alaska
Description Abstract: This photo of an Arctic Fox with a Least Auklet was taken in 1977.
Date Issued: December 14 2004