Image Number 6 for United States Patent #6820572.
A mobile prosthetic apparatus for disabled four-legged animals comprises a cart having a chassis. The chassis includes a front subassembly detachably mounted to a rearward subassembly. A primary wheel is mounted to the frame of the chassis at each side of the rearward end and a set of swively mounted secondary wheels is mounted to the frame at each side of the forward end. A yoke extends across the frame at the forward end and is movable from an active position spanning the side walls of the frame to an inactive position away from one of the side walls to permit entrance and exit of the animal from the cart.