We're nearing the end of this course of antibiotics with Hobbes, so I need to get him in to the vet tomorrow or first thing next week if I can. He seems to've responded to the treatment, so I'm really, really, really, REALLY hoping that it's another indicator that he just had a really bad infection and that it's not cancer. It may mean more antibiotic for a little longer if the infection isn't completely gone, but that's nothing.
Keep your fingers crossed for us and for him, kay?