A detangling lead assembly comprising an elongated flexible lead having a first lead end and a second lead end, a body subassembly comprising a pulley, the lead retained in a lead path from a distal end of the body assembly, around the pulley and extending from the distal end of the body subassembly whereby the first lead end and the second lead end extend generally in a distal direction from the handle subassembly and the lead is generally movable back and forth around the pulley. In some embodiments, the lead assembly further comprises a handle subassembly rotatably coupled to a proximal end of the body subassembly. In some embodiments, the housing further comprises exit points for the lead ends defining a moment arm for a moment to force the body subassembly to rotate and uncross a crossing of the lead ends.