A dog that keeps sneezing like a blocked nose may be caused by a cold, rhinitis, viral infection, or upper respiratory tract infection. You need to observe whether the dog has other abnormalities. If the dog sneezes or has a runny nose, If it is caused by other reasons, it means it has a cold, and you can give the dog cold medicine; if it is caused by other reasons, it is best to take the dog to the pet hospital for examination and treatment to avoid delaying the condition.