Can Dogs Be Allergic to Cats? Vets Weigh In

Dogs can be allergic to a variety of things, ranging from fleas and foods to pollen and dust. But can our canine companions also be allergic to cats?

It’s estimated that 10–20% of humans are allergic to cats, and surprisingly, yes, dogs can have similar sensitivities to their feline friends. Here’s how to spot allergies in dogs, how to tell what they stem from, and what to do if your dog is allergic to your cat.

Can Dogs Be Allergic to Cats?

Most pet parents are surprised to learn that, yes, it’s possible for dogs to be allergic to cats—and vice versa, with cats being allergic to dogs.

Paola Cuevas, DVM, veterinary consultant at Catster,​​ explains that sensitivities to cats are similar to those of other allergens. “Dogs can have a hypersensitivity reaction to cat proteins, which are spread through the environment through dander, saliva, and urine.”All cats have the Fel d 1 gene that causes allergic reactions, but studies show that intact males are actually more likely to produce these allergens than females. The same can be said for cats with dense hair, though the color and length don’t tend to have any effect.

Are certain dog breeds more susceptible to cat allergies?

All dogs are capable of developing cat allergies but breeds prone to skin issues or other health conditions may experience more severe symptoms.

“Some dog breeds might be more prone to allergies due to genetic factors, and a dog with a more sensitive immune system due to underlying immunocompromised disease processes might be more susceptible,” Dr. Cuevas says.

7 Symptoms of Cat Allergies in Dogs

Dogs experience allergy symptoms similarly to humans, though they tend to present more through their skin. Here are some of the most common symptoms to watch for —

1. Excessive shedding (more than usual)
2. Red, inflamed skin
3. Scratching or chewing at their skin
4. Paw licking
5. Ear infections that won’t clear up, or overly red, irritated ears
6. Coughing, wheezing, or a general difficulty to breathe
7. Licking at their rear end or scooting it across the floor

If your dog is allergic to your cat, the signs should show up quickly. But, Dr. Cuevas warns that allergies are hypersensitivities. “This means [overreactions] can also develop after a period of exposure to the same protein.”

In other words, a dog that wasn’t originally sensitive to cats can develop the allergy over time if around one.

How to Find Out if a Cat Is Causing Your Dog’s Allergies

According to Nita Vasudevan, DVM, a veterinarian at Embrace Pet Insurance, there are several methods to determine if your dog is suffering from cat allergies. “There are veterinary allergy tests which are typically blood tests or intradermal skin tests to help identify specific allergens. These are usually and most accurately done by a veterinary dermatologist.”

Pet parents can do an elimination trial by keeping your dog and cat separate for a period to see if symptoms clear up—though this can be tricky if there are other allergens at play.

There are also over-the-counter allergy kits, but Dr. Vasudevan says their accuracy and reliability can vary. It’s best to go through your vet.

What to Do If Your Dog Is Allergic to Your Cat

If your dog does, in fact, have an allergy to your cat, there are ways to help alleviate the symptoms —

• Consistently vacuum and clean communal areas
• Use air-purifiers around the house
• Keep both your dog and cat brushed and groomed regularly
• Try allergy medications such as antihistamines, corticosteroids, or allergy shots

Both Dr. Cuevas and Dr. Vasudevan agree that immunotherapy (gradual exposure to the allergen) can also be beneficial for some dogs, but this should only be done under the guidance of your vet.

Can Dogs Be Allergic to Other Dogs?

“Yes, although rare. These dogs might be allergic to several allergens and have a hypersensitive immune system,” says Dr. Cuevas. “Autoimmune diseases consist of the body attacking its own cells, so same-species allergies can happen, as well.”

Other Possible Causes of Dog Allergies

Dr. Vasudevan explains there are a variety of potential causes of allergies in dogs, with cats (or other dogs) being low on the list.

• Environmental Allergens: This can include pollen, mold, dust mites, grasses, and dander from other animals.
• Food Allergies: Common culprits include proteins such as beef, chicken, and dairy.
• Fleas: Flea saliva can cause a severe reaction and lead to a condition called flea allergy dermatitis.
• Topical Stimulants: Cleaning products, perfumes, or other chemicals can cause acute allergies if dogs come into contact with them.

Regardless of the cause, most allergic reactions present similarly in dogs. “Allergies may look like a pet having a moderate to severe itch, redness, ear infections, gastrointestinal issues, and, in some severe cases, respiratory problems,” Dr. Vasudevan says.

How to Manage Your Dog’s Allergies: Tips & Advice

If you find out your pup has a cat allergy, there are ways to manage the symptoms without having to rehome your beloved feline.

First and foremost, work with your vet to tackle the major symptoms. Allergy shots, over-the-counter allergy relief, or immunotherapy may be necessary.

At home, it’s essential to keep your dog’s environment clean through regular vacuuming and using air-purifiers—the less dander floating around, the better. Brush your cat daily and have your dog bathed frequently to remove allergens from their fur and skin.

If your pup doesn’t quit licking, biting, or chewing at their itchy skin, consider putting an E-collar on them to prevent skin infections from developing until you can get their allergies under control.

When in doubt, reach out to your vet. They’re your best bet at putting together a plan fit for you and your dog.