The CG wolf was supposed to blend in with the statuary, then
leap up suddenly with the snow flying off when the boy steps
over him.

The FX snow was done in Houdini and looked fantastic in
motion, but did not look convincing during the long time the
wolf sat still.

I painted some snow on a card in Maya so it tracks with the
wolf in the shot.  The wolf's movement is so abrupt that the
transition to the Houdini snow is pretty well concealed by
motion blur.

Lion, Witch and the Wardrobe
Boardroom wall destruction in
Hancock