I checked those articles while watching my cat eat and he seems to be fine, none of them fit him. the only issue he has is a small cyst that is on his neck. it has never gotten bigger nor smaller. We had the vet check it years ago and she said it was just common with old age. None of the Cancerous symptoms fit him either. He had a HORRIBLE abscess a few months ago (it was under his thick hair in the middle of winter, so we didn't see it) and i stumbled over him in the dark one night and I am not exaggerating, I will bet a good 16 oz of bloody puss spilled out of my cats hind quarter onto my kitchen floor. I thought he was rectally bleeding and went into hysterics and my sister came over (she's a nurse) and shaved the area where we found a lemon sized hole that reached from his tail down to his thigh. ANYWAYS, the point of my story is that, after getting him on antibiotics, he healed within 6 days and the scab was the size of a lemon SEED! I don't know why i decided to share that, but it was scary.