My sydney must be the weirdest cat around then !!! When I pass with the hoover around his "throne" , he does not even move an inch !!!! silly boy hey !!!
May be it is because it's a central vacuum system ?? The motor is in the garage and the pipes lead to there from everywhere in the house ; so the noise is much lower !!! We had to install this system as both my kids are allergic to dust ; so a normal duster or vacuumer is forbidden !!!