Why does my dog eat dog feces?

Some dogs eat anything and everything! Goose poop is our problem. We just watch where we walk and keep a short leash when necessary.

There is no one answer to this question. And it likely has multiple motivations. Dogs that are raised in restrictive environments, like puppy mills, are sometimes more prone to this. But dogs without that background will do it as well. There is no evidence that the behavior has anything to do with inadequate nutrition and in fact there are plenty of examples of dogs being on high quality diets (ours included) and still engaging in the behavior. Because the motivation is unclear, and there are likely multiple factors contributing to the problem, there is no single solution to it, other than management. Conditioned taste aversion would probably work, but is very difficult to implement, and not really practical for most people.

Some veterinary nutritionists have suggested that dogs eat stool to replenish enzymes so that they are better prepared to digest their food. There is also evidence that dogs that aren't getting enough of certain nutrients will resort to eating poop. A lack of vitamin B is often said to be a cause of coprophagia.