Walking Cane

FIG. 1 is a front, top, left side perspective view of a walking cane, showing my new design; FIG. 2 is a back, bottom, right side perspective view thereof; FIG. 3 is a front elevational view thereof; FIG. 4 is a back elevational view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top plan view thereof; FIG. 8 is a bottom plan view thereof; and, FIG. 9 is a front, top, left side perspective view of the walking cane in contracted and folded state. The broken lines shown in the drawings depict portions of the walking cane that form no part of the claimed design.