My gorgeous 8 year old lab is very sick. He has had sickness and diarrhea for a couple of weeks. an ultrasound showed infection in the bowel and the lymph nodes, but they were unable to take a sample for biopsy. the potent antibiotics have shown no improvement, so now the vet has said there is a possiblity it is cancer, but inoperable due to the position. I am so very very sad. He isn't at all ill though, he is still running away and stealing food and being the horror he has always been. He can't really be so ill can he?