He is probably thinking a couple of things.
#1 "Now I know meowmy didn't trade me for those slimy, yet tasteful things."
#2 Just how can I "get rid" of them for meowmy. I know she will love me to pieces for getting those pests out of her way. Better in my tummy than in that big ol' see through thing anyways"
By the way .... just adorable!!