Diarrhea itself is not an illness, but rather a sign of an underlying health issue. One of the most common causes of watery dog poop is a recent change in diet. It may take several days for your dog's digestive system to adjust to a new food.
Should I be worried if my dogs poop is runny?
If your dog's stool is loose, runny or very mushy, your dog has diarrhea. The reasons your dog might have diarrhea range from minor to potentially serious. Though diarrhea in dogs is common and often nothing to worry about, you should still check with your vet, especially if: Your dog is not behaving normally.
Why is my dog's poop runny?
In dogs, dietary indiscretion (eating garbage or other offensive or irritating materials), or a change in diet is a common cause of acute (sudden) diarrhea. Stress, especially following travel, boarding, or other changes in environment, can also cause acute diarrhea.
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