Question, Part II: Since my ex and I share custody, I’m pretty sure he’s been giving grocery store treats. She’s a very picky dog, so he gives her what she’ll eat.
Answer, Part II: Understandably it’s hard managing your dog’s diet in two households—especially if your ex does not understand how critical diet can be. Purchasing the food and treats and sending along with your dog—to make sure his diet is maintained, may be the simplest solution. Or make a list of agreeable foods and send them along. A little bit of preparation may be all it takes to give your dog some relief.