Abstract: The invention is a portable cattle restraining apparatus useful in the procedure for trimming an animal's hoofs, while maintaining it docile. The apparatus clamps the animal in a manner which imparts lifting force, while at the same time restraining it from movement. The frame which houses the clamp rotates so as to tilt the animal sideways, and the completely open bottom of the frame affords unrestricted access to the hoofs of the animal. The entire frame rests on the ground for maximum stability, but is converted into a trailer by rotation of a jackshaft, thus placing the wheels of the trailer on the ground and raising the frame for transport. The structure allows a cattle rancher to perform his own hoof trimming operations rather than summoning a specialist.