Is keeping a dog a sin and a cat a sunnah? What Islamic rulings actually say about the common belief

A saying about keeping animals is very common — 'keeping a dog is a sin, and keeping a cat is a sunnah.' The idea is so deeply rooted in many people's minds that some look at dogs with hatred, while giving cats a place in the home with great affection. This report examines the basis of that saying and what the actual Islamic rulings on keeping dogs and cats are.

Islam is fundamentally a religion of kindness and compassion toward all creation. On keeping animals, Islam has clear and balanced principles.

Keeping a dog inside the home without need, merely as a hobby or to display status, is prohibited in Islam. The Prophet Muhammad (peace be upon him) said, "Angels of mercy do not enter a house in which there is a dog or images of animals and people." (Sahih Bukhari, Hadith: 3225)

Another hadith says, "Whoever keeps a dog, except for hunting or guarding livestock, his reward is reduced by two qirats every day." (Sahih Muslim, Hadith: 1575) Because a dog's saliva is impure and carries a risk of spreading disease, Islam has discouraged keeping it in human living quarters.

But the blanket idea that keeping a dog always means sin is not correct. Islam clearly permits keeping dogs for logical and specific needs such as self-protection, guarding crops, protecting livestock, detecting criminals and hunting.

The Holy Quran mentions hunting animals: "They ask you what is lawful for them; say, lawful for you are all good things, and what the hunting animals you have trained catch for you, as Allah has taught you — eat of what they catch for you." (Surah Al-Ma'idah, Verse: 4)

Keeping a dog for a logical need such as security, hunting or guarding is completely lawful in Islam; even in those cases, however, the dog must be kept in a separate place outside the room where people live. (Ibn Abidin, Radd al-Muhtar ala al-Durr al-Mukhtar, 6/387)

Being prohibited from keeping a dog in the house does not mean a dog should be hated or made to suffer without cause. A famous incident described in hadith tells of a sinful woman who attained paradise for giving water to a thirsty dog. (Sahih Bukhari, Hadith: 3321) In other words, showing kindness to a dog as part of creation is an act of reward.

Cats, on the other hand, are clean animals. The beloved companion Abdur Rahman had a kitten, for which he was affectionately called "Abu Hurairah." The Prophet (peace be upon him) said, "A cat is not impure; it is one of those that go around among you." (Sunan Abu Dawud, Hadith: 75) A cat's leftovers or saliva are not impure.

However, nowhere is it said that "keeping a cat is a sunnah." In the terminology of Islamic jurisprudence, keeping a cat is a permissible (mubah) act. Imam Nawawi wrote that keeping a cat is lawful and it is a pure animal; if someone keeps a cat and shows it kindness by giving it adequate food and water, he will receive reward in return. (Nawawi, Al-Minhaj Sharh Sahih Muslim, 3/213) But there is no basis for treating it as an act of religious worship or a "sunnah."

Even though keeping a cat is permitted, cruelty toward it is an offence in Islam. The Prophet (peace be upon him) described a woman being sent to hell for confining a cat and starving it to death. (Sahih Bukhari, Hadith: 3482) So anyone who keeps a cat as a pet must properly care for its food, water and treatment.

In short, keeping a dog inside the home as a hobby is prohibited, but keeping one outside for a genuine need is lawful. Keeping a cat is lawful, but it is not directly a sunnah. Islam teaches awareness of every animal's rights and of maintaining the balance of nature.