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.
