The invention generally relates to a kit useful for making dogs and people less anxious and for allowing costumed animals to easily be controlled with a leash. The kit may include a leash attachment apparatus, a pressure-applying harness, and a collar concealer. The leash attachment may include a body with a cavity having an opening at a first terminal end of the body, the opening configured to receive a terminal end of a leash; a ring coupled to a tubular elongated aperture situated at a second terminal end of the body, the tubular elongated aperture oriented perpendicular to the opening on the first terminal end of the body; and a costume coupler hingely attached to a side wall of the body adjacent to the opening and the ring, wherein the costume coupler comprises an attachment means disposed along an inner surface of the costume coupler for securing to a costume.