I think this is amazing. In my opinion it looks like the cat is get a sore back. It is a amazing idea but is might really be hurting the cat . When the cat glares at you I think he is telling the owner that he does not like it . Maybe in the video the owner made him do that. A cat would not just out of now were just help his owner clean the house. I think that nobody should do that to there cat . If I know that it is hurting the cat I would not let him do it ever again. I think cats can be who they are they do not have to eat food that is made for them I think they should just be free. Even though they are great companions.Do you have a cat ? In my opinion cats are amazing little creatures.