http://sultanknish.blogspot.com/2011/09/our-canine-heroes-and-islamic.html
Kalb, or dog, is one of the worst possible insults in the Muslim world. Call a man Kalb or Kalb ibn Kalb, if you want the knives to come out. In Afghanistan, those who fled the Taliban and returned to help the Coalition rebuild the country are called “Sag shouey” or “Dog washers” since Americans are infidel dogs and the Afghans who cooperate with Americans are menial servants of the dogs.
http://3.bp.blogspot.com/-_2CIctSDxIc/TmgjCa1rD5I/AAAAAAAAFF8/h23w5XHxEds/s1600/me-han-wtc.jpg
Mohammed, in addition to his affinity for pre-teen girls also had a compulsive hatred of dogs. Some Hadiths quote him ordering the killing of all dogs, others show him to be moderate ordering that only “‘black dogs” be killed. Which gives a special edge to the not uncommon description in the Muslim world of Obama as a “black dog”.