A dog's sudden lack of energy and white tongue may be caused by heart disease, respiratory disease, foreign body obstruction, or poisoning. It is best to send the dog to the pet hospital for examination immediately, and treat it promptly after confirming the cause to avoid causing Danger to life.

Tips:

Pay more attention to your dog’s health and do not let your dog exercise vigorously. When your dog appears abnormal, send it to the doctor immediately for examination.