The bunnies get their Probios treat - their favorite - at 9pm every night. Usually, Bunya notices the time first and will stare at me from the floor (as posted here: I think the bunnies can tell time). Lucy & Ethel pick up on it immediately and stand by him or start running around in a treat frenzy.
Usually, I can feel the stares and get their treat. This night, I guess I was a little too distracted and wore Bunya's patience thin.