Could it also be that, especially the day after feeding, there's still some residual dinner smell around? My little guy has been doing that. Last week's feeding was fairly messy... this week's was less so, but still left a little spot on the paper towel. In both cases, he was hovering around the spot like he thought he was going to get another meal. I didn't want to bother him immediately while he was digesting, but after I came back later and cleaned up, he stopped watching those spots like a mouse was going to spring out of thin air.