The ornamental design for a dog harness, as shown and described.
FIG. 1 is a top, front, right perspective view of a dog harness showing my new design in a first configuration with the associated belly panel to the right of the harness;
FIG. 2 is a top plan view of the dog harness of FIG. 1, shown in a second configuration with the associated belly panel to the rear of the harness;
FIG. 3 is a rear elevation view of the dog harness of FIG. 1, shown in a third configuration with the associated belly panel;
FIG. 4 is a right elevation view thereof;
FIG. 5 is a bottom plan view of the dog harness of FIG. 1, shown in the second configuration;
FIG. 6 is a left elevation view of the dog harness of FIG. 1; and,
FIG. 7 is a front elevation view of the dog harness of FIG. 1, shown in the third configuration.