Abstract: A device which can be attached to the collar of a dog or other pet which device contains all the elements of a leash necessary for walking the animal. A spool is disposed in a housing and connected thereto by an axle member which runs through the center of the spool. A spring is disposed in the center of the spool and connected to the axle and spool so as to impart rotary motion to the spool. A leash is connected at one end to the spool and at the other end to a foldable handle. When allowed to run free, the spool rotates by action of the spring, thus coiling the leash thereon until the handle makes contact with the housing. The handle is folded around the housing in a groove provided therefor. The handle may be pulled away from the housing and the leash uncoiled to the desired length whereupon a small cam is wedged between the spool and the housing thus stopping of the motion of the spool.