Mine had the same symptoms and she ended up with a pancreatic inflammation. She has been on fluid since Friday and she is slowly picking up the beat. She has not eaten yet...
My vet opened her on saturday to see what was wrong and he notice the inflammed pancreas, the spleen duct blocked and the redness of the entire intestine. She almost died... because of a food she ate. Did you feed him table food? Do you feed him fatty foods?
Anyway, the symtoms looks similar. You can send me personnal message if you would like to discuss it... I am right in this situation right now. Bikini is actually sleeping on me with her IV on right now!
Good luck
