A harness assembly can include a harness including a guide; and a control line extending through the guide, the control line capable of translating through the guide relative to the harness. A pet training assembly can include a harness assembly including a harness including a guide; and a control line extending through the guide, the control line capable of translating through the guide relative to the harness, the control line defining a first end and a second end; a collar coupled to the first end; and a leash coupled to the second end.