A reversible harness for an animal having a neck region and a waist region. The harness includes a chest piece, and a back piece having a back-side tethering strap. A leash connector is rotatably disposed on the tethering strap. The reversible harness further includes a first adjustable strap to secure the chest piece to the back piece about the neck region of the animal, and a second adjustable strap to secure the chest piece to the back piece about the waist region of the animal. The harness is adapted to fit a wide variety of sizes of animals. Additionally, owing to at least one top fabric portion and at the least one bottom fabric portion of the back piece, and a first chest-side fabric portion and a second chest-side fabric portion of the chest piece, the harness is reversible.