Night
Like darkness, the night signifies the pre-cosmogenic, pre-natal darkness preceding rebirth or initiation and illumination, but it is also chaos; death; madness; disintegration; reversion to the foetal state of the world.
Night is also, according to Hesiod, the ‘Mother of the Gods’, the enveloping, maternal aspect of the feminine power, usually symbolized by a female figure with a star-spangled veil, holding a child, one black (death) and one white (sleep), on either arm; or by the crescent moon, or poppies, or the owl, or black wings.
As all-devouring time, day and night can be depicted as a white and a black rat.
Going by night symbolism esotericism.
[Source: An Illustrated Encyclopedia of Traditional Symbols by J.C. Cooper]