Several months ago I posted about how my male BP Walter didn't like artic mice frozen rats and blamed it on them being stained with urine. I purchased a big bag of small frozen rats from my vendor a month or so again and it contained a mix of multi color and solid white rats so I decided to try and experiment.
All were de-thawed and warmed with blow dryer in exact same manner. Rat number 1 was a black and white one and he slammed and coiled it and ate it perfect. Next week rat number 2 was solid white. He came out of hide like he was going to strike but despite smelling all over it refused to strike but did it eat it about 20 minutes after leaving it in his cage with the light out. Rat number 3 was mostly white with a gray blotch on it's face. Walter came out of hide and slammed it and coiled without any hesitation.
So rat number 4 this last Saturday was supposed to be my final test to this experiment. Solid white rat de-thawed and heated just like the others and I go to feed him and he comes out of hide and he's in blue. He still would not strike but did eat it about 20 minutes after leaving it in tank with the light out. So he kind of screwed up my experiment by being in blue otherwise I would conclude it as proof he prefers multi colored rats over solid white ones.
I have plenty of both kinds of rats left in freezer so I guess once he sheds I continue my experiment and get a true result and post the results. I feel he definatly has a preference but with him screwing up my test just don't think I can actually prove it just yet.