The ornamental design for a pettravelbed, as shown and described.
FIG. 1 is an outside front perspective view of a portable pet bed in the
closed position showing my new design, the opposite or rear side being
substantially identical in appearance;
FIG. 2 is an inside top perspective view thereof;
FIG. 3 is an outside plan view thereof;
FIG. 4 is a side elevational view thereof the opposite side being a mirror
image of the side shown; and,