The dog may have experienced some kind of exciting or stressful situation in the dream, causing it to make a choking or crying sound. This is usually normal and is nothing to worry about.

Also, dogs may feel uncomfortable due to throat pain, infection, or tumors, and may whimper while sleeping. If your dog has chronic throat discomfort, it is recommended to take him to the veterinarian for a check-up to determine the specific cause and treat it.

In addition to the above reasons, factors such as heart disease, esophageal problems, allergic reactions and tracheal spasm may also be Causing the dog to suddenly sob while sleeping. If your dog's symptoms persist or worsen, it is recommended to take him to the veterinarian for a timely examination to determine the underlying health problem and take appropriate treatment measures.