I was playing with my rats today, and I discovered a tumor on The Cheat, my elder and (I really don't like saying this, but) favorite rat.� She's the most wonderful rat I've ever met, sweet, playful, friendly, snuggly...� she's one of my best friends.� I made an appointment for her to see a veterinarian on Wednesday...� I'm scared for her.� At least she doesn't seem to be in any discomfort...