The dog suddenly started sneezing continuously

Itchy nose

There may be hair or dust in the dog's nose.

Irritating odors

A dog’s sense of smell is several times that of a human, and even the slightest irritating odor can be amplified in the dog’s nose. Try to keep your dog away from items with pungent odors, otherwise your dog’s sense of smell may be damaged.

Allergy

If your dog has allergies, you should pay attention to whether the dog sneezes in a fixed season or at a fixed time. Then you can be sure that the dog sneezes because of allergies. The owner must pay attention to what the dog is allergic to, and try not to let the dog come into contact with the allergen.

Cold

If your dog keeps sneezing and has runny nose, then your dog must have a cold. Pay attention to keeping the dog warm and do not let the dog sleep on the ground. Dogs can recover from a common cold through their own resistance.