This animal toilet as a longitudinal direction, a horizontal direction and a height direction, and comprises an upper container which has multiple holes through which urine passes and in which an excrement treatment member is installed, a tray which is provided below the upper container and in which an absorbent body is installed, and a lower container which is provided below the upper container and which supports the upper container and the tray. The upper container and the tray are not in contact with each other. The lower container comprises an upper container support unit which supports the upper container, and a tray support unit which supports the tray. The lower container has a protrusion on the bottom surface and, in a state in which the tray is arranged all the way to one side in the horizontal direction with respect to the lower container, the protrusion is positioned between the upper container support unit and the tray support unit in the horizontal direction.一種動物用便器,具備前後方向、左右方向、及高度方向,且具有:上容器,其設有供尿通過之複數個孔,且設置有排泄物處理材料;托盤,其設在比上容器還靠下方,且設置有吸收體;以及下容器,其設在比上容器還靠下方,且支撐上容器與托盤,上容器與托盤沒有接觸,下容器,具有支撐上容器的上容器支撐部、以及支撐托盤的托盤支撐部,下容器,係於底面具有突部,在托盤相對於下容器被配置在左右方向之最靠一方側的狀態中,突部,係在左右方向中,位在上容器支撐部與托盤支撐部之間。1‧‧‧動物用便器10‧‧‧外罩20‧‧‧上容器21‧‧‧底部22‧‧‧底部的上表面部30‧‧‧托盤31‧‧‧把手部40‧‧‧下容器54‧‧‧上側凹部55‧‧‧下側凹部h‧‧‧孔
