There was this PSOne game that had you as a police dog in mech, catching criminal cats and putting them in your backpack. You could shoot bubbles at them to trap them.
Man, I loved that one.
DoReMi Fantasy, though I'd like to hope I'm wrong and it's somewhere up next on Hudson's hit parade of franchise revivals (with Star Soldier (albeit time attack only), Alien Crush, and Adventure Island having been the first of those).