We take advice.

Yesterday's Where's the Ball Café had video of Zeus the Labrador retriever losing the ball in deep snow. This morning, David Davenport commented:

Meade, here's a suggestion. While the snow lasts, train Zeus to look for the ball in a hole in otherwise untrodden snow. Don't throw the ball. Drop it so that it sinks into the snow. Then take Zeus by the collar and direct his view to the ball down in the hole. Repeat this several times until Zeus gets the idea."

Meade immediately took Zeus into the backyard, and, from the window, I shot this video: