Noodles has a stubby little tail.
It kind of looks like a kitten tail since it starts so broad at her haunches and tapers to a fine point. Maybe she's just a giant kitten, which would explain her behavior.
The real Bob has never eaten real fish in his life (not counting canned tuna), yet somehow he knows he wants that goldfish.
Fortunately he isn't clever enough to open the lid or graceful enough to balance on the edge of the cabinet. Heh.