A toilet for animal (1), including: an upper container (20) having a plurality of holes (21a) formed on a bottom portion, the plurality of holes (21a) penetrating in an up-down direction； a lower container (30) that includes a receiving section (31) receiving excrement that has passed through the plurality of holes (21a), gravity of the upper container (20) not acting on the lower container (30)； and an output unit (41) that outputs a signal changing according to an amount of the excrement received by the receiving section (31).
