"Although most modern dogs are kept as pets, there are still a tremendous number of ways in which dogs can and do assist humans, and more uses are found for them every year" [1]. This animal is used in many activities such as rescuing, herding, sledding, hunting, guarding, tracking, and Human Remains Detection.There are also war and police dogs, which all indicate the versatility of this animal. But in Islam, there are some restrictions regarding the relationship with this useful creature.The term "impure" (Najis) in Islamic jurisprudence refers to things that are avoided because of the intensity of filth in them, one of which is dogs. The religion of Islam has warned Muslims to keep dogs “as pets” since they are deemed dirty. Now, let’s see why:

The Impurity of Dogs

Unless properly trained, dogs will defecate and urinate where ever they please; they also slobber everywhere, which doctors say is the cause of many diseases and infections.

Even though the level of awareness about the hazards of having a dog has increased among dog owners and necessary precautions about keeping it as a pet have been taken by them, dog bites continue to be a public health problem in the USA [1].

Doctors always warn about diseases we may catch from dogs: “Hookworms and roundworms (Ancylostoma and Ascaris) are common nematodes of dogs. When a human accidentally eats something contaminated with worm eggs from a pet’s stool, the eggs hatch in the intestines and begin migrating throughout that person’s body” [2].

From the viewpoint of Islam, when we speak about the impurity of the dog, we mean its "outward" filth and all its organs including skin, flesh, and hair. So, everything is considered as "impure" in contact with a wet dog or vice versa (a wet thing in contact with a dog). Almost all Muslim scholars do not doubt that dogs are impure animals. There are many narrations (Hadiths) about the impurity of dogs in authentic narration books, including:

“Allah has not created a creature more impure than dogs” [3].
“If your clothes get dampened by a dog, then you must wash them” [4].

The Fidelity of Dogs

Perhaps, one of the reasons for Islam to prohibit Muslims from keeping dogs as pets [3] is due to the high fidelity of these animals. The bond between dogs and their owners has an important impact on family relationships in a way that the dog owner may forget his family members and relatives, adore his/her pet, and neglect God’s worship as well.

It has been reported that “More and more US women are forgoing motherhood and getting their maternal kicks by owning handbag-size canines” [5].

Trained dogs in Islam

There are possibly two reasons for a person to have a dog: affection for the animal or security.

In the first case, the dog will most probably live with you in your house, which is prohibited according to Islamic law.

And in the second one, the case of security, the dog is mostly kept on the periphery of your house or property; like the dogs that are held for hunting, guarding livestock, crops, and for guarding houses, etc. These dogs are called trained dogs (Kalb-e-Moallam) in Islam and the rules regarding them are different from the ones for the other kinds of dogs.

There are exceptions to them, and they are not considered “impure” because of their skills. This fact has been mentioned in the Holy Quran directly: “As for what you have taught hunting dogs [to catch], teaching them out of what Allah has taught you, eat of what they catch for you and mention Allah’s Name over it …” (5:4)

Do Muslims hate dogs?

But do Muslims consider dogs as filthy and useless creatures? No. because these animals are also creatures of God. Similarly, despite its many benefits and its importance for human life, human blood is also regarded as impure in Islamic teachings.

In other words, dogs’ impurity does not deny the existence of their good features such as loyalty or innocence, just as the impurity of human urine, feces, and blood has nothing to do with his/her humanity.

On the other hand, Islam has proposed very detailed rights for all kinds of animals including dogs, which a Muslim must respect and observe. For example, one day when Imam Hussain (AS) saw his servant sharing his food with Imam’s garden guard dog, he highly admired the servant for his kind behavior, rewarded him with 1000 Dinars and even donated the garden to him just for observing the right of a dog [6].

Is that all?

The words mentioned above reveal the Islamic view of dogs. But is that all? Have we successfully and thoroughly looked into it to reach firm ideas about dogs?

To tell you the truth, we are not always able to understand the essence of Islamic rules and guidelines. More importantly, Muslims have learned to fully observe the practices ordained by God because they believe these practices are best for them, just like following the instructions that come with the electronic devices without questioning them.

If God, the Prophet (PBUH&HP), and infallible Imams (AS) prohibit specific practices, it is definitely because they have certain harmful effects on us that may or may not be immediate or measurable.

“…while He has already elaborated for you whatever He has forbidden you, excepting what you may be compelled to [eat in an emergency]? Indeed many mislead [others] by their fancies, without any knowledge. Indeed your Lord knows best the transgressors.” (6:119)

In a nutshell

It is permissible to keep dogs for security purposes in Islam, but you cannot let them inside your house. However, this does not mean we can harm dogs or hate them, Not at all; on the contrary, we should always be compassionate with dogs as much as we should be with any other living kind.

References:

1. Nicolae Sfetcu, About Dogs.
2. keep pets
3. All Creatures Health Care
4. Vasael Alshia, vol. 1, p. 220 Hadith 560, Imam Sadiq (AS)
5. Vasael Alshia, vol. 1, p. 225 Hadith 571, Imam Sadiq (AS)
6. al about pets
7. Mustadrak Alvasayel, vol. 7, p. 192

Have you ever wondered why lady Zainab (as) is so revered by the Muslims? What makes her so great that even after 14 centuries we remember her and take inspiration from her? Is she respected just because she was the daughter of Imam Ali (as) and Lady Fatima (as) or because she achieved a great status through her faith, patience, and determination in face of calamities?

Lady Zainab, the daughter of Ali (as)

Lady Zainab (AS) has several attributes and titles such as Al-Aqilah or the noble woman, Al-Aalimah or the most knowledgeable woman, and Aminatu al-Allah, the trustee of Allah (SWT).
She enjoyed the most exalted lineage, her mother was Lady Fatimah al-Zahra (as), who was a reflection of her father in the worship of Allah, piety, self-discipline, virtues, clemency, veneration, and other features of perfection. Her father Prophet Muhammad (pbuh&hp) named her the lady of the women of the worlds. Lady Zainab was nurtured by such a great mother. 

Lady Zaynab’s father is Imam Ali (as) who is known as chief of the prophets’ successors, leader of the pious ones, and head of the worshippers. Imam Ali (as) was the representative, successor, and heir to Prophet Muhammad (pbuh&hp). His merits are innumerable and his sacrifices for Islam are unrivaled. He was the most knowledgeable, self-possessed, magnanimous, generous, abstinent, trustworthy, faithful, and pious, and the best worshipper and the bravest among Muslims. In other words, he was the best Muslim after the Holy Prophet of Allah (pbuh&hp).

Lady Zaynab, hence, was born in the most pious family and raised in the care of the best human beings. She learned many things that made up her perfect personality, from the etiquettes of her parents and brothers. From early life, Lady Zaynab was marvelous in her intellect and wisdom. She had learned the Holy Quran by heart as well as the Prophet’s sayings regarding Islamic laws, rules of education, and principles of ethics.
She represented her brother, Imam al-Hussain (as), whenever he was absent. Hence, Muslims used to refer to her in the questions concerning Islamic laws. It was because of her extensive knowledge that Imam Zayn al-Abidin (pbuh), Abdullah ibn Jafar, Lady Fatimah the daughter of Imam al-Hussain (as), Muhammad ibn Amr, and Ata ibn al-Saib used to quote her sayings. In Kufa, during her father’s rule, Lady Zaynab had special sessions to which Muslim ladies came to listen to her lectures on Islam and the exegesis of the Holy Quran. She was thus the most trustworthy reference from whom Muslim women took advice regarding questions about Islam, moral instructions, and general ethics. 

Since early life, Lady Zaynab had equipped herself with steadfastness against misfortunes. She witnessed the death of her grandfather, Prophet Muhammad (PBUH&H), who loved her very much and sympathized with her. She then saw the horrible events that surprised her parents, immediately after the Holy Prophet’s (pbuh&hp) demise. Her father was taken away from the position that Almighty Allah and Prophet Muhammad (pbuh&hp) chose for him. Her mother was severely mistreated by people until she left this world at a young age. She then saw the people of Kufa cheat her brother, Imam al-Hasan (as), and abandoned him, thus forcing him to make a peace treaty with Muawiya, the mortal enemy of Islam and the Ahl al-Bayt (PBUT). A few years later, this Imam was assassinated by poison. She saw him vomit to blood to death. 

As though all these calamities were not enough for her, on the tenth of Muharram, 61 H., she had to witness the most bitter of adversities; her brother, Imam al-Hussain (as), was martyred without any supporter and helper; the wicked and heartless soldiers of Yazid killed every male member of Imam Hussain’s (as) family including Lady Zainab’s two sons and all the companions of Imam Hussain (as). Lady Zaynab stood like an unshakable mountain in face of all these unbearable misfortunes. She faced all these with the weapon of steadfastness and resisted all the events with conviction. She is the perfect embodiment of the ayat (verse) from the Holy Quran: 

“and give good news to the patient —those who, when an affliction visits them, say, ‘Indeed we belong to Allah and to Him do we indeed return.’ It is they who receive the blessings of their Lord and [His] mercy, and it is they who are the [rightly] guided.” (2:155-7)

Lady Zainab was a flag bearer of truth after all her family members were killed right in front of her eyes in Karbala and took up on herself to spread the true message of Karbala wherever she went. Whether it was the streets of Shaam (Syria) or the Palace of Yazid. She bravely spoke against the tyrant Yazid and invoked public opinion against his ruthless killing of Imam Hussain (as), the grandson of Prophet Muhammad (pbuh&hp)

She is an immortal role model for all the women of the world who never feared anyone but Almighty Allah (swt). Indeed, we understand from her that patience means standing firmly with determination on the command of Allah (swt).  

If Imam Hussain (as) is the leader of the martyrs, his sister Zainab is the shield that defended Imam Hussain’s (as) image after his martyrdom, if Abbas is your role model, Zainab was the strength of Abbas if Ali Akbar is your hero, his aunt Zainab was his source of fortitude and support. The true message of Karbala would never have reached us, had it not been for the sacrifices of Zainab, the daughter Ali.

References:

1.  Lady Zaynab | Al-Islam.org
2.  A Summary of Lady Zaynab's Sermon in the Court of Yazid - Al-Islam.org Blog