Abstract: A leash module including a retention opening configured to receive and retain a used pet waste bag that has been closed via a tied knot, and a bowl portion configured to receive and retain water for drinking by a pet. The leash module is configured to be removably coupled to a leash assembly. The retention opening includes a bag receipt opening sized and dimensioned to allow for insertion of the tied knot of the used pet waste bag, and a bag retention opening extending from the bag receipt opening, the bag retention opening being narrower than the bag receipt opening and being sized and dimensioned to prevent passage of the tied knot of the used pet waste bag.

Abstract: A leash assembly includes a housing comprising a handle portion. The housing includes a dispensing opening and a retention opening. The leash assembly further includes a leash at least partially contained within the housing, one end of the leash being secured within the housing. The dispensing opening is configured to provide access to an unused pet waste bag contained within the housing, and the retention opening is configured to retain a used pet waste bag. A method of disposing of pet waste includes walking a dog utilizing a leash assembly; causing pet waste to be contained within a pet waste bag, thereby transitioning the pet waste bag from an unused state to a used state; closing the pet waste bag by tying a knot in the pet waste bag; and retaining the pet waste bag via engagement of the knot with a retention opening of the leash assembly.