Dog leash

In a leash device:

• (a) a leash line having an entrance end and an exit end;
• (b) a housing constructed and arranged to lodge in the palm of a user's first hand;
• (c) said housing comprising a leash line entrance opening situate in a first surface of said housing facing away from the palm of a user's first hand, a leash line exit opening situate in a second surface of said housing facing away from the user, and a leash line passageway between said entrance opening and said exit opening, said leash line passageway comprising a bearing surface for said leash line;
• (d) within said housing, adjacent said bearing surface, variable mechanical compression means for compressing said leash line against said bearing surface;
• (e) outside said housing and adjacent thereto, mechanical control means for controlling the compression of said variable mechanical compression means;
• (f) said leash line being constructed and arranged to pass through said housing in either direction by passing through said entrance opening, then through said passageway adjacent said bearing surface and said variable mechanical compression means, then out of said housing through said exit opening;
• and
• (g) said leash device being constructed and arranged so that a user's second hand, by controlling said entrance end of said leash line, will control an animal connected to said exit end of said leash line when said mechanical control means is in a non-compression position.