The reason why a dog will die after being exposed to the rain all night is because the dog’s body is relatively weak and will catch a cold after being exposed to the rain. Therefore, it is best not to let the dog get exposed to the rain outside when it rains. If the dog gets exposed to the rain, You need to wipe the dog's body immediately, and then use a hair dryer to dry the hair thoroughly. Cover the dog with a blanket when sleeping to prevent the dog from catching a cold. If the dog catches a cold, you can take pet cold medicine.