PROBLEM TO BE SOLVED: To provide a toy for a cat having a degree of freedom in a layout of box bodies and allowing a cat to easily climb.SOLUTION: A box body 10 having a rectangular prism shape is composed of four rectangular plate bodies 11, is formed with one plate body 11 contacting only two other plate bodies 11, and has opened faces 13 on a pair of faces facing each other and having no plate body 11. In a toy 100 for a cat, at least two box bodies are attached on a wall W of a room so as to be protruded to a front side. The plate body 11 includes a hole 12 having a size enabling a cat to pass through, two box bodies 10 are superimposed vertically so that the opened faces 13 are positioned in the right/left or front/rear, the position of the hole 12 on a lower face 11b of the upper side box body 10 matches the position of the hole 12 on an upper face 11a of the lower side box body 10, and the hole 12 on the lower face 11b of the upper side box body 10 is shifted from the center of the plate body 11, thereby the toy for a cat is formed.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT