He has been vomiting, but since he has not been eating, not much comes out. The vomit it kind of bubble-y/clear. I have not seen his feces (our compound is big and I never see where he goes). Yes, he feels hotter than usual. And I have not checked his gums (I am not near him now or I would check).
No blood in the vomit that I have noticed, but I noticed his breath smelled like blood. His body is not giving off a strange scent, just his mouth.
Unfortunately to me, this sounds a great deal like Parvo. When you described him having breath that smells like blood, it made me think that's what is going on.
Parvo is an incredibly contagious, usually fatal intestinal disease that dogs get who haven't been vaccinated thoroughly for the illness.
Unfortunately when the symptoms of Parvo appear, the dog has already been infected with the illness for a while.
The best chance at survival your dog has now is to be in a veterinary clinic, receiving intensive care. He needs IV fluids, antibiotics, medications to stop the diarrhea and eventual vomiting. Parvo is not an illness that can be successfully treated at home.
Yeah, I googled the symptoms and was thinking that too. Unfortunately I live on a remote island in the middle of the Pacific, so there is absolutely no way I can get him to a vet. If it is Parvo, how long will he be sick before he dies? Will he just become more and more lethargic until he dies? What should I expect?
Is it contagious to humans? Should I stay away from him? Also there are 8 other adult dogs on the compound, can they catch it from him?