The ornamental design for a pettoydisc, as shown and described.
FIG. 1 is a top-facing perspective view of the pet toy disc showing my new design;
FIG. 2 is a left-side elevational view thereof;
FIG. 3 is a right-side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a bottom-facing perspective view thereof.
The broken lines showing of a carabiner and its base attached to the pet toy disc depict environmental structure and form no part of the claimed design. The remaining broken lines depict portions of the pet toy disc and form no part of the claimed design.