A pet furniture including a box and a plurality of sheets is provided. The box includes an accommodating recess concavely formed on a side thereof, and the plurality of sheets are detachably and erectly disposed in the accommodating recess. When the plurality of sheets are disposed in the accommodating recess, the narrow side of each of the plurality of sheets is exposed at the opening of the accommodating recess.一種寵物屋，其包含：箱體結構、卡合件及輔助承載件。箱體結構包含有底板、四個環側板及頂部，箱體結構內部形成有容置空間且能透過一開口與外連通。至少一個環側板或頂部包含有至少一個卡合結構。卡合件可拆卸地與卡合結構相互卡合，且卡合件能與另一個寵物屋的卡合結構相互卡合。輔助承載件設置於容置空間中，底板的面積不小於輔助承載件。輔助承載件設置於容置空間中時，輔助承載件能對應置放於底板。其中，底板、其中一個環側板及頂部中的至少兩個彼此相互分離時，輔助承載件能對應設置於容置空間中。
