This animal toilet has a longitudinal direction, a horizontal direction and a height direction, and comprises: an upper container in which an excrement treatment member is installed at the bottom portion, which has multiple holes through which urine passes a tray in which an absorbent body is installed that absorbs the urine passing through the holes and a lower container which is stacked below the upper container and which accommodates the tray. The bottom portion is the portion positioned bottommost inside of the upper container, and in a state in which the absorbent body has been installed, the center position of the bottom portion of the upper container is arranged, in the longitudinal direction, backwards from the center position of the absorbent body.具備前後方向、左右方向、及高度方向,且具有:上容器,其在具有供尿通過之複數個孔的底部,設置有排泄物處理材料;托盤,其設置有將通過前述孔的尿予以吸收的吸收體;以及下容器,係重疊於前述上容器的下方且收容前述托盤,前述底部,係位在前述上容器的內側中最下方的部分,在設置有前述吸收體的狀態時,於前述前後方向中,使前述上容器之前述底部的中央位置被配置在比前述吸收體的中央位置還靠後方側。1‧‧‧動物用便器10‧‧‧上容器20‧‧‧下容器30‧‧‧托盤40‧‧‧外罩41‧‧‧出入開口部42b‧‧‧後側壁部42f‧‧‧左側壁部42r‧‧‧右側壁部43f‧‧‧前側緣部43r‧‧‧右側緣部100‧‧‧尿通過部222‧‧‧側面突出部431‧‧‧嵌合孔部(孔部)
