Abstract: An electric toothbrush for pets includes a housing configured to have a button unit, a power-supply unit configured to supply power, a toothbrush head connected to the housing, a vibration unit configured to vibrate the toothbrush head using the supplied power, and a MCU configured to control the vibration unit. The MCU controls the vibration unit to vibrate with a first vibration pattern, based on an input signal generated when a button included in the button unit is selected.