It is very possible your problems with Gus is from whatever he is picking up from the yard as you described is as mouldy etc and those sorts of things can compromise the kidney and/or liver even to the point of permanent damage.
There may also be a congenital kidney issue, an ultrasound may perhaps show if the kidneys are normal or not and may give some info regarding the liver. However, a BA test for liver shunt would likely not be a good idea at this time as given all the medications he has been on particularly sulpha I would be surprised if it were normal, I would expect BA to be high.
I have also heard of Juvenile diabetes in a pup that eventually outgrew it but i have no idea what all the symtoms were and i would suspect if that's the problem he might need some insulin. |