Narrated by Sayyidah Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: The black dog is a devil.
Hadith Takhrij«صحيح لغيره۔ أخرجه الطبراني في ’’الاوسط‘‘ ، (انظر مسند أحمد ترقيم الرسالة: 25243 ترقیم بيت الأفكار الدولية: 25757»
Brief Explanation
Benefits: … The purpose of referring to the black dog as "Shaytan" is that its harm is greater than that of other dogs; metaphorically, it has been called "Shaytan." In the speech of the Arabs as well, every rebellious one is called "Shaytan." Just as an evil and mischievous person is called "Shaytan," similarly, a frightening and harmful dog is also called "Shaytan." "Shaytan" is not a personal name; rather, it is a characteristic—whoever possesses it will be called "Shaytan."