To provide a cat tower enabling expanding variation of shelf boards by freely mounting the plurality of shelf boards on positions having different heights.SOLUTION: A cat tower includes a body 10 which comprises: right and left longitudinally long nearly rectangular frame shaped-lateral face frames 2; a longitudinally long nearly rectangular frame shaped-rear face frame 3; and upper and lower front plates 4 in upper and lower both end positions of the forward ends of both lateral face frames 2. There are provided: a pair of columns 21 vertically extending to short direction both ends of both lateral face frames 2 of the body 10; and a connection plate 22 for connecting upper and lower both ends of the respective columns 21. The columns 21 of both lateral face frames 2 are formed in a cross section nearly rectangular shape long in the front and back direction, and a single kind shelf board group 12 having three shelf boards 11 allowing a cat to ride on and off is supported on both lateral face frames 2. The one shelf board 11 in the respective shelf boards 11 is inserted in a state of slidably bringing both right and left ends into contact with each other, into a central groove 13 among the plurality of grooves 13 aligned in the vertical direction in the inside surface of the column 21 facing both lateral face frames 2.SELECTED DRAWING: Figure 12【課題】複数の棚板を高さの異なる位置に自在に取り付けて、棚板のバリエーションを拡張することができるキャットタワーを提供する。【解決手段】縦長略矩形枠状の左右の側面枠2と、縦長略矩形枠状の後面枠3と、両側面枠2の前端の上下両端位置の上下の前板4と、を有する本体10を備える。本体10の両側面枠2の短手方向両端を上下方向へ延びる一対の支柱21と、各支柱21の上下両端同士を連結する連結板22とを備える。両側面枠2の各支柱21を前後方向へ長い断面略矩形状に形成し、両側面枠2に、猫が乗り降り可能な3枚の棚板11を備えた単一種棚板群12を支持する。各棚板11のうちの1枚の棚板11を、両側面枠2の互いに対面する各支柱21の内側面において上下方向に複数並設された溝13のうちの中央の溝13に対し左右両端をそれぞれ摺接させた状態で挿通している。【選択図】図12