He is looking a little ratty-furred these days, which is how Red, Merly, Niki and Yoda got as they got old or very sick.
Update: June 8, 2014: He went through a long stage where the eye over the tumor kept running and a maroon colored crust would form. I learned to gently wash his whole head with a corner of a warm, damp washcloth, hoping it would feel like a mother's tongue to him. Right now that episode seems to have ended, his appetite is back and he seems bright and energetic again.