When i said that the breeders vet said they could go for like 2 days without eating and without having any health problems is meaning that they are NOT sick, when i bought Mojo, the first week or 2 my lil guy ate very little, i didn;t give him any supplement cuz both me and the vet didn;t see a need in it, he was healthy and as we saw he was just getting used to the new enviroment...
Doesn;t matter the size of the dog, if they go for 4 days without eating ANYTHING at all, i doubt they are ok, they must be feeling something different, maybe even from not eating..i would take him to get checked by a vet. As per the bath...i wouldn't go more than 15 days without one...even if it snowed here in MIA...hehehehe
It is always the best option to get a vet the specializes in small breeds