hello...I have a wonderful hairless female rat who is getting old and has developed a mid-size tumor on her chin area. it was not visibly affecting her lifestyle before. however, last night, she scratched the skin open, and she now basically has two flaps of skin and a big open wound on her face. she is clearly in pain and there is no hope in my mind of this wound ever healing, especially as she is already so old. the problem is, I live in a secluded area when I'm not at school, and there are NO vets that will see rats at all. I am a pre-vet student, and have euthanized mice in a lab with the vet anesthetics halothane and isoflurane before...but I do not know where to obtain this for personal use. does anybody have any suggestions or information that can help me? I feel terrible that this has happened and want the rest of her life to be as painless and comfortable as possible. thank you.