theres somthing wrong with him .for info he is a rodesionridgeback/doberman.he was fine last night then in the morning he started it.have any info
did some one leave the home another animal or just a person he really loved? it sounds like stress or worry to me. or is he hearing something did someone die recently?
Very possibly ear mites that have spread over his body. WIill cause him to act strange because of this irritation . See your vet who has a product to apply to his neck that will help if this is your cituation. Good Luck
Walker is right... you should take him to the vet..I know they're expensive but at least you will get the right care!