Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The dog in a dream is a foolish man, a weak enemy with little chivalry. A female dog is a lowly woman. A dog's bark is ugly speech from an enemy. A dog's bite is receiving harm from an enemy or betrayal from a friend. Whoever sees a dog tearing his clothes, a foolish man is backbiting him. A domestic dog is an enemy from the household, and a hunting dog (Saluki) indicates attaining authority.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The dog indicates worldly people. A shepherd's dog indicates benefit and sustenance. Eating dog meat indicates victory over an enemy and taking his wealth. Whoever sees himself fleeing from a dog will escape an enemy, but with fear. Black dogs are enemies from the Arabs, and white dogs are enemies from non-Arabs.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The dog is interpreted as a weak enemy with no ambition. Whoever sees a dog bite him or tear his clothes will receive worry and harm from his enemy proportional to the pain. Befriending a dog indicates accompanying servants and relying on them. A female dog is interpreted as a worthless woman with no opinion. Whoever sees himself turn into a dog has learned knowledge but does not act upon it.