Patent ID: 7963251

Claim:
A companion animal toileting system including: a base unit adapted to be temporarily supported on the rim of a toilet bowl, the base unit having: a generally horizontal upper wall portion having a lower surface adapted to be placed on the top of the rim of the toilet; a recess in the upper wall that extends below the lower surface and in use into the bowl and into which companion animal may urinate, defecate or both, the recess defined by: a closed curve opening in the upper wall portion; a side wall portion that extends downwards from the upper wall portion, and a horizontal annular first base wall portion extending inwards from the side wall portion and spaced vertically below the lower surface, the annular first base wall defining a first aperture, through which animal waste may pass into the bowl of the toilet; a plurality of substitutable apertured blocking members, each having a second base wall portion with a second aperture therein defined by a closed curve, the second apertures in the aperture blocking members being of different sizes and being smaller than the first aperture; each blocking member having a retaining wall adjacent to and surrounding the second aperture extending upwards from an upper surface of the second base wall portion adjacent the retaining wall, the second base wall portions of each of the plurality of blocking members sized to be received in the recess and supported in the recess by the first base wall portion; said base unit configured to support a single one of the apertured blocking members at a time to reduce the effective size of first aperture, the effective size of the first aperture being adjustable to one of a plurality of different sizes by supporting a single one of the blocking members on the base unit in the recess or substituting the single blocking member supported on the base unit in the recess with a different one of the blocking members.