Parasites
Diarrhea in puppies can also be caused by several intestinal parasites like hookworms, whipworms, or roundworms. These organisms can be passed from the mothers right after birth. Also, your puppies would pick them up from contaminated water or the soil when going outside. It can be hard and time-consuming to diagnose parasites. Most cases can be treated successfully with suitable drugs from the vet. However, a late treatment would be fatal and affect the long-term health of your puppies. [3]
