What should I feed my dog with an upset stomach, and how can I determine the most appropriate dietary choices to alleviate their discomfort? When faced with this perplexing situation, is it prudent to consider factors such as the underlying cause of the stomach upset, or should I prioritize easily digestible foods that are gentle on their gastrointestinal tract? Moreover, are there specific ingredients or food types that are universally recommended by veterinarians, particularly in terms of their therapeutic benefits? Should I opt for bland options like boiled rice or plain, unseasoned chicken, or might certain vegetables provide additional relief? Furthermore, what role does hydration play in this context, and should I be cautious about introducing any new foods too hastily? As I navigate this quandary, how can I ensure that my canine companion receives adequate nutrition while also allowing their stomach to recover? Ultimately, what are the most critical considerations in these dietary adjustments?