SPOILER - The Silver Doe

"And then the source of the light stepped out from behind an oak. It was a silver-white doe, moon-bright and dazzling, picking her way over the ground, still silent, and leaving no hoof prints in the fine powdering of snow. She stepped toward him, her beautiful head with its wide, long-lashed eyes held high.
Harry stared at the creature, filled with wonder, not at her strangeness, but at her inexplicable familiarity."

~ J.K.Rowling - Harry Potter and the Deathly Hallows. Chapter 19, "The Silver Doe"