A kind of apparatus for closet uses for a four-footed pet, and includes: a toilet bowl steps on vertical plate and an induction control mould group once bucket, four. Toilet bowl includes the first water-flushing device of a groove body and a setting what groove body. Just it struggles against and is upwardly extended by the side of toilet bowl, and the second water-flushing device including an ontology and a setting what ontology. It steps on vertical plate to be displaceably arranged above what toilet bowl, and energy step on vertical position one relative to toilet bowl and non-step between vertical position is moved. Induction control mould group includes a sensing unit and a control unit. When sensing units sense to four-footed pet is close to apparatus for closet, control unit control, which is stepped on vertical plate and is moved to, steps on vertical position, make four feet of four-footed pet respectively standing what this etc. step on vertical plate, and when four-footed pet is far from apparatus for closet, step on vertical plate be moved to it is non-step on vertical position, and the first water-flushing device and the second water-flushing device respectively wash by water to groove body and ontology.一種便器裝置，供一四足寵物使用，並包含：一便槽、一便斗、四踏立板及一感應控制模組。便槽包括一槽體及一設置於槽體的第一沖水器。便斗由便槽的一側向上延伸，並包括一本體及一設置於本體的第二沖水器。踏立板可位移地設置於便槽上方，並能相對便槽在一踏立位置及一非踏立位置之間移動。感應控制模組包括一感應單元及一控制單元。當感應單元感應到四足寵物接近便器裝置時，控制單元控制踏立板位移至踏立位置，使四足寵物的四隻腳分別站立於該等踏立板，而當四足寵物遠離便器裝置時，踏立板位移至非踏立位置，且第一沖水器及第二沖水器分別對槽體及本體沖水。
