Key takeaways

  • Dog allergies are triggered by specific proteins found in a dog’s dander, saliva, and urine, not by the fur itself.
  • Symptoms of a dog allergy can vary in severity and may appear immediately or several days after exposure.
  • While avoiding dogs completely is the most effective solution, medical treatments and lifestyle adjustments can help manage allergic reactions.

Pet allergies are common in the United States. Researchers estimate that around 1 in 4 people are allergic to pets, such as dogs or cats, although not everyone experiences symptoms.

Dog allergies are triggered by proteins in dander, saliva, and urine, rather than dog hair itself. Symptoms can range from mild to severe, sometimes taking several days to appear.

While removing the dog is the most effective solution for managing symptoms, some medications and natural remedies can be effective in the short term.

Keep reading to learn about the causes, symptoms, and treatments for dog allergies.

Dogs secrete proteins that end up in their dander (dead skin), saliva, and urine. An allergic reaction occurs when your immune system reacts abnormally to these usually harmless proteins upon re-exposure.

The World Health Organization (WHO) has identified eight specific allergen components that can be harbored in the dander, urine, saliva, or blood of dogs. The three most common are Canis familiaris (Can f) 1, 5, and 6.

The allergen eventually finds its way into the animal’s fur. From there, it can collect in carpets, between couch cushions, and on clothing and walls when the hair sheds. The pet hair itself is not an allergen, but it can trap dust and dander.

According to the Allergy and Asthma Foundation of America (AAFA), different dog breeds produce different dander, so it’s possible to be more allergic to some dogs than others.

What’s more, pet dander can also carry other potential allergens, such as mold, pollen, and dust mites. If you have seasonal allergies or asthma, these can potentially trigger or further exacerbate your symptoms.

Symptoms of a dog allergy may range from mild to severe. They may include:

  • itching of the nose, mouth, and ears
  • eye swelling, itchiness, and discoloration
  • runny or stuffy nose
  • sneezing
  • postnasal drip (drainage in throat)
  • coughing
  • shortness of breath
  • wheezing
  • skin discoloration, hives, or rash after being licked by a dog

For some people with low sensitivity, symptoms may not appear for several days after exposure. For others, however, symptoms may onset quickly.

If you have asthma, it’s also possible to experience an asthma attack within 15 to 30 minutes of exposure to a dog. This is known as allergic asthma. Pet dander can remain airborne for long periods, allowing it to enter your eyes or your lungs and trigger asthma symptoms.

Does dog exposure during infancy increase the risk of allergies?

People used to believe that exposing a newborn to the family dog could cause a child to develop a pet allergy. However, the opposite appears to be true.

Some research suggests that exposing a baby to a pet doesn’t increase the risk of developing allergies or asthma. In fact, it may even protect the child from developing pet allergies later.

What’s more, a 2023 study found that exposure to dogs until age 3 years may help reduce the risk of developing milk, egg, and nut allergies. But more studies are needed to understand the link between food and pet allergies.

You may wish to connect with a healthcare professional if you frequently experience symptoms, such as itchy eyes, a runny nose, and coughing, when around dogs.

Most people with dog allergies experience symptoms when they’re around a dog or shortly after coming into contact with one. A key sign that these symptoms are related to pet dander is that they resolve within a few days of exposure.

A healthcare professional can examine your symptoms and will likely perform several allergy tests, such as a skin prick test or blood tests, to help determine the underlying cause of your symptoms.

The only certain way to manage allergies is to eliminate exposure to the allergen. For dog allergies, this means avoiding any contact with dogs and removing pet dander from the home. But this may not always be possible.

While there are currently no specific guidelines for managing dog and other pet allergies, a doctor can help you develop a treatment plan tailored to your needs.

A treatment plan could include a combination of medical treatments and natural remedies to prevent or reduce the severity of allergy symptoms.

Medical treatments for dog allergies

Medical treatments for managing symptoms of dog allergies may include over-the-counter (OTC) or prescription medications taken orally, applied topically, or delivered via nasal spray or eye drops.

Some medical treatments may include:

Researchers are investigating potential medical treatments targeting specific allergen compounds in dogs and other animals. More studies are needed to fully understand how and whether these treatments are effective.

Natural remedies and lifestyle changes

Several home remedies and lifestyle changes can help you manage symptoms of dog allergies, including:

  • trying a daily saline (salt water) nasal rinse
  • setting up dog-free zones, such as couches, beds, and certain rooms where the dog is not allowed
  • bathing the dog weekly using a pet-friendly shampoo (done by a non-allergic person)
  • regularly vacuuming carpets and furniture, as well as cleaning bedding
  • removing carpeting, upholstered furniture, horizontal blinds, curtains, and any other items that may attract dander
  • washing your hands, face, and clothes after touching a dog
  • using high-efficiency particulate air (HEPA) purifiers to reduce airborne allergens in the home
  • using a trial period when introducing a new pet to the family to assess family members’ reactions to the new dog

Pet dander can remain in a room for up to 6 months after the dog has been removed, so you may still experience symptoms for a while after treating your home.

Medical Perspective

“If you have a dog allergy and plan to visit someone’s home or go to a social event, preparation can make a big difference.

First, let your host know about your allergy so the dog can be kept in another room if possible. Second, consider taking your usual allergy medication before you arrive. During the visit, try to avoid upholstered furniture where pet dander collects, and wash your hands after contact.

If your symptoms tend to be more severe, it is a good idea to carry any prescribed medications with you.”

— Alana Biggers, MD, MPH

Learn more about whether you can own a pet if you have allergies.

Quotes represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.

Yes, it’s possible to be allergic to any type of animal with fur, feathers, or scales. According to Allergy UK, some animals may include:

  • rabbits
  • guinea pigs
  • mice
  • hamsters
  • birds
  • horses
  • reptiles

No, all dogs can cause allergy symptoms in people, according to the AAFA.

Different breeds may produce different dander or carry different proteins in their saliva or urine, so it’s possible to be more allergic to some dogs than others. However, no dogs are considered hypoallergenic.

Dog allergies are common and are caused by proteins found in dander, saliva, and urine.

Several medications and lifestyle changes can help manage symptoms like itchy eyes, a stuffy nose, and wheezing. In some cases, however, it may be necessary to avoid contact with dogs, especially if you have asthma.

An allergist can perform tests and tell you how severe your dog allergy is and what types of treatments can help. Talk with your doctor about your allergy and your treatment options.