Yes, excessive sneezing could mean that your dog is ill with some sort of respiratory ailment.
There's other symptoms that are often associated with respiratory problems, including discharge from the eyes or nose, sneezing, coughing, wheezing, panting, along with more generalized symptoms such as poor appetite and lethargy.
An upper respiratory infection or URI is a good candidate. This can also be associated with congestion, and discharge from the nose and eyes. A course of antibiotics from your vet will be needed to clear up URI.
Kennel cough, for example, is a common respiratory illness. It can be transmitted from dog-to-dog in the same way that humans pass colds to one another. It's almost always associated with a dry, frequent cough, but I have seen a couple cases where the dog starts out sneezing.
Seasonal can also cause sneezing, and again, there's often other symtoms present as well, such as runny nose, watery eyes and congestion. Another similar cause are irritants in the air - such as dust from a home improvement project or the like.
If there's really no other symptoms present, your dog could be in the early stages of a URI or other infection, or the sneezing could be the result of something such as an object that's been inhaled into the nose or respiratory tract - it can occur while the dog is simply sniffing around the home or yard. This is a case where a vet would have to perform an exam to determine if there's something caught in the nose, and often, the object will dislodge on its own, without any further problems. Other times, the object will have to be removed.
Tooth problems - such as an infection - can also cause problems with sneezing. You can look inside your dog's mouth for any obvious areas of redness, inflammation or irriatation, but often, a tooth problem won't be all that obvious and it will take a vet's trained eye to spot the ailment.
For more information on URI's and other sneezing causes, visit:
For more information on kennel cough, visit:
I wish you luck in sorting out the cause of your dog's sneezing! Don't hesitate to let me know if you have any additional questions.
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