The ornamental design for a pettoy, as shown and described.
FIG. 1 is a perspective view of the pet toy;
FIG. 2 is a front view of the pet toy;
FIG. 3 is a rear view of the pet toy;
FIG. 4 is a view of the right side of the pet toy;
FIG. 5 is a view of the left side of the pet toy;
FIG. 6 is a top view of the pet toy; and
FIG. 7 is a bottom view of the pet toy.
FIG. 8 is a perspective view of a second embodiment of FIG. 1, the only difference being the addition of a sleeve, it being understood that all other views are the same as those in the embodiment of FIG. 1; and,