My dad and I took cupcake (my rat) to the vet... and boy does she hate going to the vet... She really didn't like when the vet tech took her temperature (took 2 tries because she wouldn't stop squirming (not that i blame cupcake, that thermometer didn't look very comfortable)). Cupcake was climbing all over my dad just to get into her comfort zone. After that the vet came in. He looked at cupcake's lump and said it was benign (the lump did not change at all since i first discovered it on cupcake, still the same size and still completely free floating. the lump is not a problem for cupcake's movement either) and to just keep an eye on it if anything changes. My dad's arms after the visit were covered in marks from cupcake's tiny claws.