Happy Halloween! Let’s celebrate with this scary cute baby arctic fox at Alaska Maritime National Wildlife Refuge. Arctic foxes are found in two color phases: white and blue. White-phase foxes appear brown in the summer and pure white in winter. Blue-phase foxes appear gray in the summer and a lighter gray in the winter. Blue-phase foxes are uncommon, so this photo is a rare treat. Photo by Ryan Mong, U.S. Fish and Wildlife Service.