A leash includes a container housing to be carried on a collar, chain, harness or other similar restraint, readily available for use. An outer end of a leash strap can be pulled by a user to dispense the leash strap for use, and the leash can be retracted and rewound in the container housing. The leash can be latched in a retracted configuration to prevent unwanted extension of the leash, and can be unlatched by a user for extension or storage of the leash in the retracted configuration. In one form the leash includes a thumb wheel that can be turned by a user on an inner rotatable spool in an unlatched position, and rotation of the thumb wheel is prevented in a latched position.
