Abstract: A dissolving water making unit and a bubble generating unit are provided. The dissolving water making unit includes a gas dissolving device for dissolving gas in water. The bubble generating unit includes a bubble generating nozzle and a bubble generating cartridge. The dissolving water making unit sucks water from a water source, and sucks gas to make dissolving water from a mixed solution in which the water and the gas are mixed together. The dissolving water is obtained by dissolving the gas in the water. The bubble generating unit generates microbubbles from the dissolving water supplied from the dissolving water making unit.

Abstract: A pet cleaning apparatus comprises a cleaning tub, a saturated solution generator and an air-bubble generating nozzle. The saturated solution generator is connected to the cleaning tub and configured to generate a saturated solution by saturating a pressurized fluid with air. The air-bubble generating nozzle is connected to the cleaning tub and the saturated solution generator and configured to generate a fine air-bubble in the saturated solution.