Why is the dog vomiting and having a fever?

The dog is vomiting and has a fever. It is very likely that the dog has canine distemper. Canine distemper is a highly contagious and fatal infectious disease. Dogs infected with canine distemper will have symptoms such as vomiting, diarrhea, loss of appetite, and rising body temperature. The dog's body temperature changes in a biphasic fever type, that is, the body temperature first rises to 39-41 degrees, lasting for 1-3 days, and then It gradually subsides and approaches normal temperature. After a few days, the body temperature will rise again, which can lead to the dog's death. It is best to take your dog to the hospital for examination and treatment as soon as possible. After being cured, your dog may also develop sequelae of canine distemper.