The natural remedies listed have been of benefit to our dogs. It is not considered serious unless it lasts more than 12 hours in duration and there is blood, vomiting, etc.
Uncontrollable diarrhea is considered an emergency.
Wide range is due to the size, age, and fitness of your dog. Practice periodically to get a sense of what is normal for your dog. Mucous Membranes, Color of Gums, tongue, and inside of eyelids should be a nice healthy pink. Respiratory Rate 15 to 20 breaths per minute. Temperature, How to Take Your Dog's Digital thermometers are quick and easy to use.