A pet groom and vacuum cleaner including the pet groomer are provided. The pet groomer includes a main body having two sidewalls, an actuator container, and a hollow handle for connecting with the suction hose. A comb assembly is fixed between said two sidewalls, and includes a rotatable body, and a comb teeth arranged in an axial direction of the rotatable body. A driving assembly drives the comb teeth to rotate with the rotatable body. The comb teeth rotates between a first position and a second position. The driving assembly is isolated from the suction airflow and includes an actuator element exposed out of the actuator container and extending toward the hollow handle. Motion transmission elements of the driving assembly extends from the actuator element to the comb assembly, and includes three sections.