FIG. 1 is a front elevational view of the dog treadmill showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front elevational view showing a use thereof.

The broken lines in FIG. 7 are for purposes of illustration only and form no part of the claimed design.

It is understood that the mesh in FIGS. 1-4 and 7 continues throughout the unshaded area as indicated.