No, K&L ... I have no idea about the sore. Actually it is the front end of the top of his little tongue... making it painful to suck. That is why you see him taking the bottle in the side of his mouth and chewing on it! He was rescued from a barn where the people moved out and just left all the barn cats. He was the only one in his feral litter that the lady was able to catch! I don't even want to think what has become of the others.
I am being hopeful that his sore tongue is just a slight injury ... not signs of an illness like FeLv or Feline Aids. I'm going to give it a couple of days to clear up, and if it doesn't, we will have to do the dreaded testing.

Barnaby (since found in a barn) is showing some improvement ... he won't eat anything but Tuna (typical) but he had it really well this morning, and took some CatSip milk from his bottle. He purrs and rolls over on my chest now which is also an improvement. The first whole 24 hours he wouldn't even lie down comfortably, he was just so weak.

Barnaby is already getting very affectionate ... loves to rub his NOW cold and wet nose on my face!

He's not out of the woods yet, but I am hopeful... thank you ALL for your prayers!