"I've asked him and he doesn't answer" Haha Dogs, you know..
Walking sideways, wobbly, or otherwise off balance can be a sign of a nuerological disorder. Whether it was brought on by a stroke, a tumor, or just a general glitch in the brain. If he's recently started doing it then it could be a sign of something developing, or as stated he might've had a stroke. It could as well be something as harmless as feeling embarrassed or ashamed. Maybe he has used the bathroom in the house and is trying to hide from it as to not get into trouble. It could be that he's shying away from a specific person in the house. Whether they intimidate him or again he's afraid to get into trouble for something he's done.
I would take him to the vet and have him evaluated.
at 10:46 PM on Oct. 28, 2010