She’s a mouse! Or some kind of kitten. Perhaps a puppy.
My husband had to correct me, though, when I declared this costume to be the cheapest EVER. “You spent at least a fraction of a cent on that eyeliner. Remember when we forgot about Halloween the year Vlad went as Safari Kid?” ooo. yeah. That was the year Curious George and a safari-themed shirt from the closet became a costume.
Context is important. Is she a kitten eating a mouse, or a Mommy Mouse about to be eaten by a giant cat?