The ornamental design for a full stadiumpetbed, as shown and described.
FIG. 1 is a first perspective view of a full stadium pet bed.
FIG. 2 is a top view of the full stadium pet bed.
FIG. 3 is a first side view of the full stadium pet bed.
FIG. 4 is a second side view of the full stadium pet bed.
FIG. 5 is a third side view of the full stadium pet bed.
FIG. 6 is a fourth side view of the full stadium pet bed.
FIG. 7 is a bottom view of the full stadium pet bed; and,
FIG. 8 is a second perspective view of the full stadium pet bed.
The broken lines in the drawings are directed to environment for illustrative purposes only and depict portions of the full stadium pet bed that form no part of the claimed design.