The dog in your dream represents something, memory or emotion that you are willing to let go.
Husband and mother are around, because they will always accompany you for life.
Bury it deeper, that is, hide your feelings.
The dead man with half a face actually looks like his mother, but in fact she symbolizes your mother's past tense existence.
At that time, you needed care, but now you are mature and independent in soul and personality.