Mule

FIG. 1 is a right side view of a mule showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a perspective view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front view thereof.

The broken lines depict portions of the mule that form no part of the claimed design.