all you need is a rubber band, some sort of glue and a 3d printer.
steps:
1.print the lock you want.
2.thread the rubber band in to the holes and tie the two ends together.
3.glue the cat face/dog paw to the cabinet door.
4.glue the rubber band housing to the other cabinet door.
5.insert one of the fish/bone legs in to the rubber band loop and slide it in to the housing.
6.slide the other leg in to the cat face/dog paw track.