Watchful goose
A goose guarding the yard — domestic alarm that will raise itself before a stranger reaches the door.
A watchful goose in a dream is the dream's image of a domestic alarm that raises itself before a stranger reaches the door. Geese were guards before dogs; they hear what the household does not. The dream brings the watchful goose when someone in your life — possibly you — is doing the unglamorous, audible work of detecting approach. A goose hissing at the gate is the dream affirming that the warning system is active. A goose silent at the gate while a stranger is already past it is the dream noting that the alarm did not raise, and the household is going to be surprised.