As of today Dr. Plotnick has pronounced Arthur fully recovered. He still has a small scab on his neck from the feeding tube, but he sees no reason for further concern or treatment for Arthur's illness. He's happy, active and while not eating tons he seems to be back to eating his normal amount and maintaining his weight without the tube :)
Beowulf's test results came back showing him to be perfectly healthy in every way. Now we dont have to go back to the vet for 6 months for Beowulf and 2 months for Arthur so he can get his shots.
So no more weekly trips across town to the vet for Arthur, his days traveling around the city by cab are over.