FIG. 1 is a front, top and right side perspective view of a first embodiment of a fillable pet treat in accordance with my design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a front elevational view thereof;
FIG. 8 is a front, top and right side perspective view of a second embodiment of a fillable pet treat in accordance with my design;
FIG. 9 is a top plan view thereof;
FIG. 10 is a bottom plan view thereof;
FIG. 11 is a left side elevational view thereof;
FIG. 12 is a right side elevational view thereof;
FIG. 13 is a rear elevational view thereof;
FIG. 14 is a front elevational view thereof;
FIG. 15 is a front, top and right side perspective view of a third embodiment of a fillable pet treat in accordance with my design;
FIG. 16 is a top plan view thereof;
FIG. 17 is a bottom plan view thereof;
FIG. 18 is a left side elevational view thereof;
FIG. 19 is a right side elevational view thereof;
FIG. 20 is a rear elevational view thereof; and,
FIG. 21 is a front elevational view thereof.
The broken lines represent portions of the fillable pet treat in which the design is embodied that form no part of the claimed design.
The dot-dash line in FIGS. 15 and 16 adjacent to the shaded areas represent the bounds of the claimed design.