Allergies are one of the most common causes of sneezing in dogs. Allergies can be caused by a variety of things, including pollen, dust mites, and food.
If your dog is sneezing frequently, it could be a sign of an infection, such as a respiratory infection or a sinus infection.
If your dog is sneezing and pawing at their nose, it could be a sign that they have a foreign object in their nose.
If your dog has recently been injured, such as in a car accident, they may sneeze as a result of the trauma.
In rare cases, sneezing can be a sign of a more serious condition, such as a tumor in the nose or throat.
If your dog has recently started taking a new medication, and they are also sneezing, it is possible that the medication is the cause.
The environment can also play a role in dog sneezing. If your dog is spending a lot of time in dusty or smoke-filled environments, they may be more likely to sneeze.