It doesn't matter that her breakfast chard is only half eaten - the sound of cantaloupe being prepared brings Pinni front-and-center. She doesn't wheek; she just stands at attention behind the grids that are closest to the kitchen, awaiting the melon that must be arriving at any moment.
I'm not sure what captures her attention. Cutting cantaloupe isn't a particularly noisy task. It doesn't start with the tell-tale sound of the vegetable drawer in the fridge. Maybe she smells of the melon all the way from the other room and that's what clues her in. Regardless, preparing a melon always get Pinni's attention.