My 2 yr old rat was diagnosed with a inoperable mammary tumor on her lower abdomen last month. The vet told me that they are not painful on there own but I do notice times that make me question that. The tumor is very large ( approx 2 inch diameter), hard and purple in places. It's been extremely difficult finding veterinary care for her in my area. The vet charged $300 for the exam and ultrasound, I have just about exausted my funds for vet care and was given no advice on how to care for her other than to euthanize (when she will longer take food or water or when I decide it's time). I am hoping there are things I can do at home to ease her discomfort...relieve swelling perhaps...is there anything that could help? Warm or cold compress? Any pain medication rats can take safely? Any educated or experiential advice would be appreciated. I love her very much.