Hi, well allowing pets depends on your apartment policy also neighbors attitude. Please get to know whether you can keep a pet and you can fulfill its responsibilities before going for one as it is heart breaking to see people giving off or just forsaking their dog when they face problems i.e. shifting to a new place. If you decide to go for one do visit QAWS or Parkview Pet Center whose founder Mr. Abdullah runs a rescue called Second Chance where you can adopt a loving dog for free.
Best of luck.