The ornamental design for a pet harness havingintegratedcollar and accessory loops, as shown and described.
FIG. 1 is a front elevational view of a pet harness having integrated collar and accessory loops showing my new design;
FIG. 2 is a left side elevational view, the right side view being a mirror image thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a bottom plan view of my design in an unassembled state; and,
FIG. 5 is a top plan view of FIG. 4.
The dog, attachment means, bows and decorative elements depicted by broken lines in the drawing views have been shown for the purpose of illustrating environment that forms no part of the claimed design.