Start studying Eukaryotic Cell Parts and Functions. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Report Abuse. In general puppies should not have untreated diarrhea for more then 24 hours. For adult dogs that can be extended to three days depending upon the size of the dog. Diarrhea is a sign that something is wrong.
Chronic diarrhea means: 1  Diarrhea, with one or more of these symptoms: Watery stools. 2  The diarrhea could be continual. 3  The diarrhea can also be off and on, with some good days followed by some bad days. 4  Your dog might act sick during the worst bouts of diarrhea, while other dogs might act normal the whole time.