Excessive Sneezing in Dogs: How Much Sneezing Is Too Much?

Everybody sneezes–sometimes–humans and dogs alike. A sneeze is an involuntary, forcible expulsion of air through the nose and mouth in response to irritation of the nasal passages. In other words, the body is trying to get rid of something that doesn’t belong.

An inhaled irritant can make your dog sneeze the same way you would.

Those can include dirt, dust particles, perfumes, pollens, or, in Cookie’s case, I suspect she often inhales the flower with its scent when she’s sniffing out critters or examining the environment for the presence of intruders. And then she’ll sneeze. A couple of times. And that’s that, and she’s ready to continue her reconnaissance work.

A few sneezes now and then are perfectly normal and of no concern. However, some dogs, especially small breeds, can start sneezing in anticipation of excitement. No, I don’t get that one. But it can happen.

What if your dog keeps sneezing, though?

The first thing that comes to mind, it seems, is allergies. I often feel I’m going to sneeze my brains out during allergy season. Is the same true for dogs? Not really.

This is not to say that a dog could never sneeze from allergies. It is to say, however, that is quite unlikely. In fact, in dogs, sneezing is the least likely reaction to an allergen. This is because allergies in dogs typically manifest through the skin, not the nose.

Let’s forget the connection between sneezing and allergies.

There are much more likely and quite more serious potential causes behind your dog’s excessive sneezing.

Foreign bodies

Yes, pollen or dirt particles and the like are also technically foreign bodies. The difference is that they are tiny, and a healthy sneeze or two should be enough to get them out of there. Right?

Sneezing is a perfectly good system that should be able to take care of such things easily. If your dog keeps sneezing on and on and on, it means that whatever there is in there isn’t likely to come out on its own. Yes, your dog could end up with a twig or a stick up their nose or, the most treacherous of them all, foxtails. That is no light matter. A foxtail can cause a substantial injury and travel further in, all the way to vital organs!

Such foreign bodies require veterinary intervention. Other potential signs of a foreign object in your dog’s nose include pawing at the nose, nasal discharge, and nosebleeds. Uncontrollable, violent sneezing is a red flag signaling a significant problem, such as a foxtail stuck in your dog’s nose. These things are very good at getting into places and staying there.

Infections

Nope, we’re not talking about a common cold type of infection. Bacterial or viral upper airway infections in dogs are much more likely to cause coughing than sneezing, and dogs do not get a primary bacterial infection in the nasal passages. However, they commonly get bacterial infections secondary to foreign bodies or neoplasia. Therefore, a fungal infection, namely Aspergillus (or penicilliosis), is a much more likely suspect behind your dog’s excessive sneezing.

Other potential symptoms that come with that beauty include pain, visible swelling, and discharge or bleeding from the nose.

Nasal mites are technically an infection too. These tiny bugs can cause terrible itching and trigger sneezing fits. And yes, it often comes with a side of nasal discharge and bleeding.

And here is a twist for you. The infection making your dog sneeze might not even be in their nasal passages. An infected tooth or its root, particularly the third upper premolar, can cause sneezing and nasal discharge.

Nasal tumors

As long as we’re listing all the nasty and scary things that can be behind your dog’s excessive sneezing, we must not forget about tumors. Unfortunately, that can be the cause, and it’s not as uncommon as you’d wish.

Breed-related issues

The anatomy of smushed-faced/brachycephalic breeds makes them more prone to sneezing or reverse sneezing spells in response to irritants or upper respiratory infections.