Ever noticed your pets sneezing or scratching more than usual and wondered what’s up? Well, it turns out, just like people, pets can have allergies too—even to each other! Dr. William H. Miller Jr., VMD, from Cornell University, shares some surprising insights into this. He’s done a deep dive into how our pets can react to each other’s dander, which is kinda like pet dandruff that floats around and can cause allergies.

Dr. Miller, along with his colleagues, explored the complexity of allergic diseases in dogs and cats, revealing that inter-species sensitivities could indeed affect our pets. So, let’s find out if our pets can be allergic to each other, how we know, and what we need to do about it.

Stop Googling - Ask a Real Vet


  1. Can Dogs Really Be Allergic to Cats
  2. What Are the Signs of a Pet-to-Pet Allergic Reaction
  3. What to Do If Your Pet Is Allergic to Another Pet
  4. Can Cats Be Allergic to Dogs
  5. Can Cats Be Allergic to Other Cats
  6. Conclusion

Can Dogs Really Be Allergic to Cats

Believe it or not, yes! Dr. Miller and other scientists have found out that dogs can actually be allergic to cats. It sounds a bit like a plot twist in a cartoon, but it’s a real thing.

"Interestingly, a not insignificant number of atopic dogs exhibited positive reactions to cat dander, suggesting that dogs can indeed be allergic to cats. This challenges the conventional wisdom and opens up new avenues for managing pet health," researchers note in a study on Japan, referencing findings from a pivotal study on pet allergies (ScienceDirect study on pet allergies).

The truth is, just like us, research shows that both dogs and cats can have an immune or allergic response to the proteins that exist in other animal’s fur, skin, saliva, or skin. We don’t know how common it is for dogs to be allergic to cats, but it definitely does happen.

When pets are allergic to each other, their bodies mistake something harmless (like the other pet’s dander, which is tiny flakes of skin) for a big, bad invader. Their immune system kicks into high gear to fight off this “invader,” causing symptoms like itching, sneezing, or watery eyes. It’s their body’s way of saying, “Hey, something’s not right here!”

Cat dander would fall under the category of environmental allergens, which is a common cause of atopic dermatitis on dogs. And your vet can figure it out with something called intradermal allergy tests.

Just like people, every pet’s immune system is a bit different, so what bothers one dog might not faze another. And just because they’re furry doesn’t mean they’re immune to each other’s dander. In fact, it's pretty common for pets living in the same house to develop allergies to each other over time.

Keeping an eye on your pets and spotting any allergy signs early can make a huge difference. And guess what can help you do just that? The Petcube Tracker! This nifty gadget lets you keep track of what your pets are up to, helping you figure out if they’re getting into something that might be making them sneeze or itch.

What Are the Signs of a Pet-to-Pet Allergic Reaction

Alright, so you might be wondering, "How can I tell if my dog is having an allergic reaction to my cat? Or vice versa," Good question! Here are a few signs and symptoms to watch out for that might mean your pets are not getting along on an allergy level:

  • Watery eyes – Just like humans, dogs can get watery, goopy eyes if they're allergic to something — yes, even your cat!
  • Sneezing and sniffling – If your dog starts sounding like they’ve got a bit of a cold, it could actually be allergies. And yep, the cat could be the cause.
  • Constant scratching – Both dogs and cats can get super itchy from allergies. So, if you notice a lot more scratching than usual, it’s time to play detective. You may also see hair loss and a number of other skin issues if your pets are allergic to each other.

Not sure if your pet's sneaky scratch sessions are due to allergies or something else? The Petcube Cam is a great way to keep an eye on them, even when you're not home. You can watch for any of these signs in real time and figure out what's bugging them.

What to Do If Your Pet Is Allergic to Another Pet

Finding out your pets might be allergic to each other is a bit like discovering they’ve been plotting a sneezy, itchy rebellion. But don’t worry, you’re not out of options. Here’s how to keep the peace and help them feel better:

  • Visit the vet – First things first, get a professional opinion. Your vet can confirm if it’s really allergies causing the trouble and help you figure out the best plan.
  • Keep things clean – Regular baths for your pets can reduce the amount of allergen-laden dander they spread around. Also, vacuuming and dusting more often can help clear up those invisible irritants.
  • Create some personal space – Sometimes, a little distance can help. Consider setting up separate areas for your pets if their allergies are causing a lot of discomfort.
  • Consider allergy treatments – There are various treatments and medications that can help ease allergy symptoms. Your vet might suggest something specific that could really make a difference.

Caught off guard by a pet allergy emergency? The Petcube Emergency Fund is here to back you up. It offers up to $3,000 in emergency vet bill coverage for up to 6 pets on one subscription, all for around $1 a day. Plus, you get 24/7 access to online vets, so help is always just a click away.

And because we know how unexpected vet visits can be stressful (and pricey), we’re offering a 27% discount for blog readers right here. Now, you can breathe a little easier knowing you’ve got a plan to handle those sneezes and scratches.

Can Cats Be Allergic to Dogs

It’s not just dogs that can be allergic to cats. Our feline friends can also give the side-eye to their canine housemates, but for allergy reasons. Just like dogs, cats can react to the dander (those tiny, invisible flakes of skin) that dogs leave behind.

So if your kitty is sneezing, coughing, or over-grooming (that’s when they lick themselves too much), they might be telling you they’re not too thrilled about the dog’s dander.

Cats being allergic to dogs can show in a few ways:

  • Itchy skin – They might scratch more than usual or get irritated skin.
  • Sneezing and runny noses – Just like people, cats can get the sniffles from allergies.
  • Over-grooming – Cats clean themselves to feel better, but too much can mean something’s up.

If you suspect your cat is not a fan of your dog’s dander, it’s a good idea to check in with your vet. They can help you figure out if it’s really an allergy and what steps to take next.

Worried about missing the signs of an allergic reaction in your cat? The Petcube Pet Camera can help you keep an eye on them, even when you’re not home. This handy gadget lets you watch over your pets, making sure your cat isn’t in a sneezy fit or going overboard with the grooming when your dog is nearby. It’s a great way to make sure everyone in your furry family stays happy and healthy.

Can Cats Be Allergic to Other Cats

Believe it or not, cats can sometimes be allergic to, well, other cats. It’s a bit like finding out you’re allergic to your roommate—awkward, right? But in the world of cats, it’s all about the dander. Even though they’re from the same species, one cat’s dander can be another cat’s allergen nightmare.

Signs your cat might not be getting along with their feline friend on an allergic level include:

  • Persistent scratching – More than their usual grooming routine might indicate an itch they just can’t shake.
  • Sneezing or coughing – If your cat starts sounding like they’re catching a cold, especially around their cat buddies, it might be allergies.
  • Eye or nose dischargeWatery eyes or a runny nose can be tell-tale signs of an allergic reaction.

So, what if you’ve got a multi-cat household and suspect one of your furballs is allergic to the other? A trip to the vet is a good start. They can help identify the issue and suggest ways to reduce dander in your home, like more frequent baths (good luck!) and air purifiers.


Navigating the world of pet allergies can feel like a puzzle, but understanding the signs and knowing how to respond can make all the difference. Whether it’s dogs allergic to cats, cats allergic to dogs, or even cats allergic to each other, there are ways to manage these reactions and keep the peace at home.

Regular vet visits, cleaning, and monitoring with tools like the Petcube Pet Camera can help ensure your pets live together comfortably. Remember, a happy pet home is one where every sniffle and scratch is taken care of.

Was this article helpful?

Help us make our articles even better

Yes No

Thank you for your feedback