Pet playpen

FIG. 1 is a front, right and top perspective view of a pet playpen showing our new design;

FIG. 2 is an exploded view thereof, with the top and bottom parts separated to reveal the interior of the pet playpen;

FIG. 3 is a front view of the pet playpen shown in FIG. 1 ;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the figures illustrate portions of the pet playpen that form no part of the claimed design.