The ornamental design for a pettreat, as shown and described.
FIG. 1 is a perspective view of a pet treat showing our new design; the broken lines and the area surrounded by said broken lines form no part of the claimed design;
FIG. 2 is a front view of the design shown in FIG. 1, wherein the rear view is a mirror image thereof; the broken lines define the bounds of the claimed design; the broken lines themselves forming no part of the claimed design;
FIG. 3 is a left view of the design shown in FIG. 1; wherein the right view is a mirror image thereof; the broken lines define the bounds of the claimed design; the broken lines themselves forming no part of the claimed design;
FIG. 4 is a top view of the design shown in FIG. 1; the broken lines and the area surrounded by said broken lines form no part of the claimed design; and,
FIG. 5 is a bottom view of the design shown in FIG. 1; the broken lines and the area surrounded by said broken lines form no part of the claimed design.