The Quran mentions dogs a few times and does not label them as evil or inherently impure; instead, it shows them in neutral or even positive roles, especially in guarding and hunting contexts.

Main Quranic mentions

• In Surah Al-Ma’idah 5:4, the Quran says that game caught by trained hunting animals, including dogs, is lawful to eat when God’s name is mentioned, which implicitly accepts using dogs for hunting and does not treat their contact as making the food forbidden.

• In Surah Al-Kahf 18:18 and 18:22, the story of the Companions of the Cave repeatedly highlights a dog sitting at the entrance as their loyal guardian, and the animal is described without any criticism or suggestion of impurity.

No direct ban in the Quran

• Writers who survey all verses note that the Quran nowhere declares dogs haram, unclean, or forbidden to keep; rather, the text is silent on banning them and only specifies permissible uses such as hunting and guarding.

• Because core prohibitions in Islamic law are usually expected to be explicit, some scholars argue that, from the Quran alone, owning or benefiting from dogs (for example, for protection or work) is not forbidden as long as general Islamic ethics and cleanliness are observed.

Why some Muslims think dogs are a problem

• The widespread idea that dogs are disliked or that their saliva is impure comes mainly from hadith reports and later legal discussions, not from explicit Quranic wording; those discussions then shaped many schools’ rulings about keeping dogs inside the home or bringing them into prayer spaces.

• Even in those discussions, there is also a strong emphasis on kindness to animals, and traditional stories describe God rewarding people for showing mercy to thirsty or suffering dogs, reinforcing that cruelty to them is considered sinful in Islam.

If you want, the specific verses in Arabic and translation (like 5:4 and 18:18–22) can be explained line by line for deeper study.