I am very interested in compiling data on the Marshall Farm ferret's that have tattoos on their hind legs. I too had one that had a tattoo. She died at age 4 from some type of brain tumor. She had no symptoms and then had hind weakness and within a month the tumor grew to the size of a grape and she had to be euthanized. Anyone interested in helping me with this study please send me a private email (don't want to flood BIG). Please include the following: Ferrets name: Age: DOB: Sex: Location of tattoo: Color: Brief description of medical history: Size: (weight and if she/he is unusually small or large) Shelter ferret: Yes or No Pet store purchase: Yes or No -if yes what state (I am trying to see if there is any trend or pattern here.) State: If you know what state she originally came from when purchased (I am trying to see if there is any trend or pattern here.) I will compile the data and let you know the outcome. I appreciate any help that I can get on this. Thank you Lisa & her 24 paws [Posted in FML issue 3747]