An apparatus includes a carriage, a foundation, a pivot coupler, a platform, a coupler, a linear actuator, an extension member, a spray tool member, and a controller. The carriage moves along the track. The foundation is coupled to the carriage. The pivot coupler is coupled to the foundation. The coupler is coupled to the platform. The coupler couples the platform to the pivot coupler. The extension member is coupled to the linear actuator. The spray tool member is coupled to the extension member. The controller is configured to cause the carriage to move along the track, the platform to pivot, and the extension member to move in the lengthwise direction to position a spray tool coupled to the spray tool member at a spray position from which the spray tool may discharge a solution to a teat of a dairy livestock.