Abstract: Fluid delivery systems, methods and apparatus to dispense a dose of fluid on an animal, which may be particularly used for behavior modification of the animal, are disclosed. A system may particularly comprise an apparatus wearable by the animal. The apparatus is suitable for storing a fluid contained therein, and dispensing a dose of fluid on the animal, particularly to spur or otherwise induce behavior modification of the animal, particularly in response to training stimuli during a training scenario.