Coprophagia is normally a juvenile behavior that dogs outgrow. Some dogs may continue into adulthood. The behavior may have different origins, not the least of which is “stomach heat” and inadequate nutrition (i.e. non-species appropriate food, non-fresh food, etc.).
I sound like a broken record, but consider a gradual change to a real food, grain-free, low-carb. diet whether it be cooked or raw food. Add digestive enzymes to meals and use a probiotic for several months.
Damage control/breaking the habit in the short term: Only let the dogs out to eliminate when you are there to supervise. Pick up all feces immediately. If you see the dog start to think about eating a pile, give a “no” command and re-direct their attention so you can pick up the poop. Treat it as a training task much as you would teach “sit” or “stay.”
Hope that helps! By the way, I’m a holistic veterinarian in Phoenix and I have a blog at http://naturalalternativesvet.com/category/blog
