Pet Enclosure Apparatus

FIG. 1 is a perspective view of a pet enclosure apparatus for use with a set of stairs, showing our new design;

FIG. 2 is a front side elevation view of the pet enclosure apparatus of FIG. 1 , the back side view being identical;

FIG. 3 is a top plan view of the pet enclosure apparatus of FIG. 1 ; and,

FIG. 4 is a left side elevation view of the pet enclosure apparatus of FIG. 1 .

The broken lines shown in the drawings illustrate portions of the pet enclosure apparatus that form no part of the claimed design.