Not eating pork is honestly taking up on faith. It is not sure
what is really behind that "God's commandment" though there may be
several possible reasons for the prohibition.
The disgust towards dogs, if any, is mostly of unexamined religious
conditioning. "Dog's saliva is inherently so dirty and therefore
you should fear the animal" doesn't fit much with the Quranic
position and the idea turns out to be weak when put through better
standards of Islamic jurisprudence.
