A portable chute for immobilizing an animal having a frame structure configured to receive an animal, an entrance gate having a movable retainer member associated therewith for selectively engaging the rear portion of the animal, an exit gate having a selectively movable stanchion member for adjustably controlling the size of an opening associated therewith for immobilizing the head and neck area of the animal, at least one belly strap associated with an elongated arm operatively coupled thereto for engaging the animals midsection when positioned within the frame structure, and an arm assembly operatively connected to the frame structure for pivotally rotating the entire chute between an upright vertical loading/unloading position and a horizontal operative position for treating the hooves of the animal. The chute assembly can be mounted to the bed of a vehicle and is always maintained in its vertical position above ground level. The vehicle may include a stabilizer assembly for further supporting the vehicle when the chute is pivotally rotated between its horizontal and vertical positions.