"Wolves can move very softly. The sound they make is in the manner of Los Angelos Timidos, the shyest angels. First they fall back and shadow the creature they're curious about. Then, all of a sudden, they appear ahead of the creature peeking half-face with one golden eye from behind a tree. Abrupt the wolf turns and vanishes in a blur of white ruff and plumed tail, only to backtrack and pop up behind the stranger again. That is shadowing".
from "Women Who Run With Wolves", Clarissa Pinkola Estes, author