Because puppies have a more delicate immune system they are almost always at higher risk with any infection or disease. Puppies have a much harder time fighting off the symptoms of giardiasis, such as diarrhea, abdominal pain and weight loss with giardia cysts running rampant in their tummies. Puppies are also a bit more prone to getting more involved in feces, so are more likely to become infected. It can be harder for puppies to recover from a bout of giardia, so if you notice the symptoms listed below in your cutie pup, you need to consult with your vet immediately.