Abstract: A restraining device for an animal. A body having a base and two spaced-apart walls define a cavity to receive the animal. At least one pair of side restraining members is mounted to one of the walls of the body. Each restraining member is displaceable away from the wall and into the cavity to engage a side of the animal. An overhead restraining member is mounted to the body above the base. The overhead restraining member is displaceable toward and away from the base to engage the animal. A tightening mechanism is mounted to the body and has at least one rotatable rod. The first end of the rod has a rotatable handle to rotate the rod and the second end has a cam engaging one of the side restraining members. The handle rotates the cam and displaces the side restraining members into the cavity.