LOL. Well, they may think they did away with the Cookie Monster but apparently he is alive & well in all of us and those rats! I think this study proves it - we are born craving sweets the same as people crave feeling a drug high. I know I've got a Cookie Monster alive & well in me! I think that is so darn funny that the rats didn't care a thing for the rice cakes(yech!) or the saline solution but flocked to those Oreos about the same as they did to the strong drugs!