It seems perfectly clear that you guys stubbornly took your position and simply do not hear what the original poster is trying to say.
I's a "cry for help" message, you have no idea what you are advising. Here in Qatar there is no such thing i guess as aggressive dogs. I am not animal hater at all, i have three cats and a dog back home and i do too hate people hurting animals, but in this case it's not hurting that the poster is after. They need a device to actually protect human life. a girl in my home town was attacked by a group of 6 angry dogs. She was a hundred meters away from them when they saw her and rushed after her. Let me tell you - it was stupid of her to stand still, she was brutally bitten, she survived only because a guy who was passing by heard screams and scared the dogs away with a branch of old tree he found there.
My little sister and my mom both are terrified to death of the groups of dogs that run around day and night, twice they actually had to run not to be bitten.

So keep your 'stand still and they won't hurt you" comments in your kind animal shelters and instead just try to help if you can. It's you who is ill informed and cannot see anything farther than your own little village.

To blackbeauty_1:
i realize it's a pretty old thread, but if you did find the dog whistle in Qatar, please do let me know, my sister asks me for it every time we speak and i do feel she is terrified of those dogs.

P.S. no intention to sound rude, but it's hard to read comments of people who have no idea what they are actually talking about and never met with anything like that in their life before when they have to fear for their loved ones' lives.