Update: despite my bragging he has not pooped yet but he did have a nice clean shed so I went ahead and fed him again yesterday which was exactly 2 weeks from his last meal (video). This rat was a bit smaller than the last one though still in the same size category just on the small end of it. I recorded it again, not for another silly video but just for my own edification. once again he kept it clamped for about two minutes and sniffed around for 15 minutes before actually eating. Any ideas about this behavior? I'm not worried or anything because he is eating just fine but very curious.