A leash assembly includes a housing structured to define a handle portion extending away from a spool portion. A spool is rotatably positioned within the spool portion of the housing. A leash is coupled to the spool. The leash is selectively extendable outwardly from the housing and retractable inwardly to the housing. The leash is selectively coupled to an animal. A knob is coupled to the spool such that the knob is positioned outside of the housing. The knob is selectively rotated by the user. The knob is respectively tightened toward the housing and loosened away from the housing. A disk is coupled between the knob and the housing. The disk frictionally engages the spool when the knob is tightened toward the housing and slips on the spool when the knob is loosened away from the housing.