Hi Emsy
Candy my dwarf, had aggressive tumors, at 1 year 8 months. The vet said even if she survived the op removal, the tumors would grow back. One Tumor was the size of a grape, located in the middle of her chest, and the other was on her side. Candy was having difficulties breathing, due to the tumor was pushing on her chest, and she was very uncomfortable, not at all doing normal hammy things, but still eating and drinking. I opted to let her go peacefully, due to the vet said, the tumors would take her, and it's just a matter of a short time..:/