Mule

FIG. 1 is a front perspective view of the mule showing my new design;

FIG. 2 is an enlarged front view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is an enlarged rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a top view thereof.

The broken lines showing the sole of the mule form no part of the claimed design.