In the last week my Tess decided she wanted to eat her poo is that common? I have different breed of dogs before her and I have a Yorkie now and none of them done that before. Seeing that sweet face eat that yucky stuff gross
This is a common problem when there's too much carbohydrates in the food compared to proteins and too little enzymes to brake those carbs down. Enzymes don't brake down in the digestive system and contains them. Enzymes are destroyed by cooking so you could try adding some raw meet in to his diet. Could also be vitamin B deficiency or the worst case scenario something wrong in her pancreas, that is where the enzymes are coming from too.