I know its late after your post but Miele do a vacuum cleaner to remove pet hairs from carpets/sofas etc it is called Miele Cat & Dog (I have one at home in uk and it is excellent) I also used to vaccum our dog (staffi) and she loved it!!!!

Dyson also do one specifically to remove animal hair from surfaces.

Do not however know if Miele or Dyson brands available to buy in Qatar but have not really looked.