I am sorry Crazy Horse is not feeling well.
First thing, Make sure he is able to urinate.
Feel all over his body for any pain response, wound, stuck item or sore.
Look inside his mouth for a stuck item, bad tooth, sore or any abnormalities. Check under tongue, roof, cheek pouches and between lips and teeth.
If you do not see anything, see if he is willing to eat. You can try canned food, tuna, or even turkey.
For diarrhea add one tablespoon of boiled white rice to canned or baby food (no onion or garlic).
Please let me know how he is doing. Reply here or if you prefer, we can speak on the phone.
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Have a wonderful Thanksgiving,