A friend of mine has a ~13 year old Pekingese, which has almost no teeth left, needs pills for its heart, stomach, and liver, and medicine for rebuilding/regenerating his intestinal lining…
Since it hates wet dog food and only “likes” the dry variety (even though he hardly eats even that), and since due to it being raised on dog food, and also not having teeth, raw meat would probably not be a good idea (open to suggestions, I’m not well-read on how a dog should eat),
I was thinking she could feed it protein shakes, with some added fat etc.
Would this be a good idea? (if the dog would like shakes…)
Most dogs cannot handle lactose so shakes would have to be lactose free. Many dogs like cheese (Havarti, a high fat one, being a good choice).
Iron Dwarf makes a really good suggestion because slightly raw meat (finely ground) and slightly heated in a frying pan, is easier to digest for the dog.
You can add veggies to it (spinach with a bit of olive or coconut oil in a pan, heated lightly) and slowly faze out the dried food.
Also, as suggested, it it might be time to consider the humane act of putting the dog to sleep…as heartbreaking as it would be to lose their buddy after 13 years. That’s a long list of ailments you wrote down and since this isn’t your dog there might actually be more you are not aware of…
Good luck, hope you can help your friend out.