They have got to press the lever at the bottom to have them to dispense, as well as kibble drops on to the tray for them to delight in! Innovation ongoing during the ’90s. Growing out within the KONG rubber line, both to dental toys and grooming brushes. KONG ZoomGroom https://dailyideapost.com/the-ultimate-guide-to-dog-toys-kong-dog-toys-dog-puzzle-toys-interactive-dog-toys-and-tough-dog-toys/