Good News! My 10 year old cat was cured of a "very" large tumor with H2O2. I found this site a few months ago. I started out trying to use iodine, but she wouldn't let me near her after the first time. So I started putting some H2O2 in her water. I didn't however think about the fact that like humans, she might need a break for a few days now and then. It arrested the growth immediately, it drained some clear liquid for a bit, and she grew back her fur. But it stayed there. Until I gave her a break. Then it started draining large amounts of thick yellow pus. After about 10 days, it is gone!